Annals of Coloproctology

Original Articles

Colorectal cancer

Long-term clinical outcomes after high and low ligations with lymph node dissection around the root of the inferior mesenteric artery in patients with rectal cancer: Min Wan Lee, Sung Sil Park, Kiho You, Dong Eun Lee, Dong Woon Lee, Sung Chan Park, Kyung Su Han, Dae Kyung Sohn, Chang Won Hong, Bun Kim, Byung Chang Kim, Hee Jin Chang, Dae Yong Kim, Jae Hwan Oh; Ann Coloproctol. 2024;40(1):62-73. Published online February 26, 2024; DOI: https://doi.org/10.3393/ac.2023.00094.0013

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Purpose
This study aimed to evaluate the long-term clinical outcomes based on the ligation level of the inferior mesenteric artery (IMA) in patients with rectal cancer.
Methods
This was a retrospective analysis of a prospectively collected database that included all patients who underwent elective low anterior resection for rectal cancer between January 2013 and December 2019. The clinical outcomes included oncological outcomes, postoperative complications, and functional outcomes. The oncological outcomes included overall survival (OS) and relapse-free survival (RFS). The functional outcomes, including defecatory and urogenital functions, were analyzed using the Fecal Incontinence Severity Index, International Prostate Symptom Score, and International Index of Erectile Function questionnaires.
Results
In total, 545 patients were included in the analysis. Of these, 244 patients underwent high ligation (HL), whereas 301 underwent low ligation (LL). The tumor size was larger in the HL group than in the LL group. The number of harvested lymph nodes (LNs) was higher in the HL group than in the LL group. There were no significant differences in complication rates and recurrence patterns between the groups. There were no significant differences in 5-year RFS and OS between the groups. Cox regression analysis revealed that the ligation level (HL vs. LL) was not a significant risk factor for oncological outcomes. Regarding functional outcomes, the LL group showed a significant recovery in defecatory function 1 year postoperatively compared with the HL group.
Conclusion
LL with LNs dissection around the root of the IMA might not affect the oncologic outcomes comparing to HL; however, it has minimal benefit for defecatory function.

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Early detection of anastomotic leakage in colon cancer surgery: the role of early warning score and C-reactive protein
Gyung Mo Son
Annals of Coloproctology.2024; 40(5): 415. CrossRef

Colorectal cancer

Partial mesorectal excision can be a primary option for middle rectal cancer: a propensity score–matched retrospective analysis: Ee Jin Kim, Chan Wook Kim, Jong Lyul Lee, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim; Ann Coloproctol. 2024;40(3):253-267. Published online March 31, 2023; DOI: https://doi.org/10.3393/ac.2022.00689.0098

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Abstract PDF

Purpose
Although partial mesorectal excision (PME) and total mesorectal excision (TME) is primarily indicated for the upper and lower rectal cancer, respectively, few studies have evaluated whether PME or TME is more optimal for middle rectal cancer.
Methods
This study included 671 patients with middle and upper rectal cancer who underwent robot-assisted PME or TME. The 2 groups were optimized by propensity score matching of sex, age, clinical stage, tumor location, and neoadjuvant treatment.
Results
Complete mesorectal excision was achieved in 617 of 671 patients (92.0%), without showing a difference between the PME and TME groups. Local recurrence rate (5.3% vs. 4.3%, P>0.999) and systemic recurrence rate (8.5% vs. 16.0%, P=0.181) also did not differ between the 2 groups, in patients with middle and upper rectal cancer. The 5-year disease-free survival (81.4% vs. 74.0%, P=0.537) and overall survival (88.0% vs. 81.1%, P=0.847) also did not differ between the PME and TME groups, confined to middle rectal cancer. Moreover, 5-year recurrence and survival rates were not affected by distal resection margins of 2 cm (P=0.112) to 4 cm (P>0.999), regardless of pathological stages. Postoperative complication rate was higher in the TME than in the PME group (21.4% vs. 14.5%, P=0.027). Incontinence was independently associated with TME (odds ratio [OR], 2.009; 95% confidence interval, 1.015–3.975; P=0.045), along with older age (OR, 4.366, P<0.001) and prolonged operation time (OR, 2.196; P=0.500).
Conclusion
PME can be primarily recommended for patients with middle rectal cancer with lower margin of >5 cm from the anal verge.

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Review of definition and treatment of upper rectal cancer
Elias Karam, Fabien Fredon, Yassine Eid, Olivier Muller, Marie Besson, Nicolas Michot, Urs Giger-Pabst, Arnaud Alves, Mehdi Ouaissi
Surgical Oncology.2024; 57: 102145. CrossRef
Tumour-specific mesorectal excision for rectal cancer: Systematic review and meta-analysis of oncological and functional outcomes
Fabio Carbone, Wanda Petz, Simona Borin, Emilio Bertani, Stefano de Pascale, Maria Giulia Zampino, Uberto Fumagalli Romario
European Journal of Surgical Oncology.2023; 49(11): 107069. CrossRef

Colorectal cancer

Efficacy of preoperative chemoradiotherapy in patients with cT2N0 distal rectal cancer: Min Young Park, Chang Sik Yu, Tae Won Kim, Jong Hoon Kim, Jin-hong Park, Jong Lyul Lee, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Jin Cheon Kim; Ann Coloproctol. 2023;39(3):250-259. Published online April 4, 2022; DOI: https://doi.org/10.3393/ac.2022.00066.0009

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Graphical Abstract Abstract PDF Supplementary Material

Purpose
This study was designed to determine the feasibility of preoperative chemoradiotherapy (PCRT) in patients with clinical T2N0 distal rectal cancer.
Methods
Patients who underwent surgery for clinical T2N0 distal rectal cancer between January 2008 and December 2016 were included. Patients were divided into PCRT and non-PCRT groups. Non-PCRT patients underwent radical resection or local excision (LE) according to the surgeon’s decision, and PCRT patients underwent surgery according to the response to PCRT. Patients received 50.0 to 50.4 gray of preoperative radiotherapy with concurrent chemotherapy.
Results
Of 127 patients enrolled, 46 underwent PCRT and 81 did not. The mean distance of lesions from the anal verge was lower in the PCRT group (P=0.004). The most frequent operation was transanal excision and ultralow anterior resection in the PCRT and non-PCRT groups, respectively. Of the 46 patients who underwent PCRT, 21 (45.7%) achieved pathologic complete response, including 15 of the 24 (62.5%) who underwent LE. Rectal sparing rate was significantly higher in the PCRT group (11.1% vs. 52.2%, P<0.001). There were no significant differences in 3- and 5-year overall survival and recurrence-free survival regardless of PCRT or surgical procedures.
Conclusion
PCRT in clinical T2N0 distal rectal cancer patients increased the rectal sparing rate via LE and showed acceptable oncologic outcomes. PCRT may be a feasible therapeutic option to avoid abdominoperineal resection in clinical T2N0 distal rectal cancer.

Citations

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Performance reporting design in artificial intelligence studies using image-based TNM staging and prognostic parameters in rectal cancer: a systematic review
Minsung Kim, Taeyong Park, Bo Young Oh, Min Jeong Kim, Bum-Joo Cho, Il Tae Son
Annals of Coloproctology.2024; 40(1): 13. CrossRef
Comparative analysis of organ preservation attempt and radical surgery in clinical T2N0 mid to low rectal cancer
Hyeung-min Park, Jaram Lee, Soo Young Lee, Chang Hyun Kim, Hyeong Rok Kim
International Journal of Colorectal Disease.2024;[Epub] CrossRef
Organ preservation for early rectal cancer using preoperative chemoradiotherapy
Gyung Mo Son
Annals of Coloproctology.2023; 39(3): 191. CrossRef
Unveiling the profound advantages of total neoadjuvant therapy in rectal cancer: a trailblazing exploration
Kyung Uk Jung, Hyung Ook Kim, Hungdai Kim, Donghyoun Lee, Chinock Cheong
Annals of Surgical Treatment and Research.2023; 105(6): 341. CrossRef

An investigation into tumor regression grade as a parameter for locally advanced rectal cancer and 5-year overall survival rate: Supparerk Laohawiriyakamol, Wongsakorn Chaochankit, Worawit Wanichsuwan, Kanet Kanjanapradit, Teeranan Laohawiriyakamol; Ann Coloproctol. 2023;39(1):59-70. Published online March 18, 2022; DOI: https://doi.org/10.3393/ac.2021.01011.0144

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Abstract PDF

Purpose
The standard treatment for locally advanced rectal cancer (LARC) is neoadjuvant chemoradiation (nCRT) followed by surgery. Several parameters are associated with patient survival in LARC. One of these parameters is tumor regression grade (TRG); however, the significance of TRG remains controversial. In this study, we aimed to examine the correlations of TRG with 5-year overall (OS) and relapse-free survival (RFS) and identify other factors that influence the survival rates in LARC after nCRT followed by surgery.
Methods
This retrospective study included 104 patients diagnosed with LARC who underwent nCRT followed by surgery at Songklanagarind Hospital from January 2010 to December 2015. All patients received fluoropyrimidine-based chemotherapy at a total dose of 45.0 to 50.4 Gy in 25 daily fractions. Tumor response was evaluated using the 5-tier Mandard TRG classification. TRG was categorized into good (TRG 1–2) and poor (TRG 3–5) responses.
Results
TRG (classified by either the 5-tier classification system or the 2-group classification system) was not correlated with 5-year OS or RFS. The 5-year OS rates were 80.0%, 54.5%, 80.8%, and 67.4% in patients with TRG 1, 2, 3, and 4, respectively (P=0.22). Poorly differentiated rectal cancer and systemic metastasis were associated with poor 5-year OS. Intraoperative tumor perforation, poor differentiation, and perineural invasion were correlated with inferior 5-year RFS.
Conclusion
TRG was probably not associated with either 5-year OS or RFS; however, poor differentiation and systemic metastasis were strongly associated with poor 5-year OS.

Citations

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Performance reporting design in artificial intelligence studies using image-based TNM staging and prognostic parameters in rectal cancer: a systematic review
Minsung Kim, Taeyong Park, Bo Young Oh, Min Jeong Kim, Bum-Joo Cho, Il Tae Son
Annals of Coloproctology.2024; 40(1): 13. CrossRef
Risk-factors for locally advanced rectal cancer relapse after neoadjuvant chemoradiotherapy: A single center experience
Dragana Stupar, Saša Jungić, Zdenka Gojković, Jelena Berendika, Živojin Janičić
Medicine.2023; 102(44): e35519. CrossRef

Malignant disease, Rectal cancer,Prognosis,Biomarker & risk factor

Can pretreatment platelet-to-lymphocyte and neutrophil-to-lymphocyte ratios predict long-term oncologic outcomes after preoperative chemoradiation followed by surgery for locally advanced rectal cancer?: Sang Hyun An, Ik Yong Kim; Ann Coloproctol. 2022;38(3):253-261. Published online March 7, 2022; DOI: https://doi.org/10.3393/ac.2021.00633.0090

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Abstract PDF

Purpose
Systemic inflammation is associated with various malignancies, including colorectal cancer, as possible prognostic predictors. We aimed to evaluate the correlation of pretreatment the platelet-to-lymphocyte (PLR) and the neutrophil-to-lymphocyte (NLR) ratio with long-term oncologic outcomes and pathologic complete response (pCR) in locally ad vanced rectal cancer patients who received neoadjuvant concurrent chemoradiotherapy (CRT) followed by curative resection.
Methods
Between October 1996 and December 2015, 168 rectal cancer patients treated with preoperative CRT followed by surgery were enrolled. The set cut-off/mean PLR and NLR were 170 and 2.8. We analyzed the relationship between PLR, NLR, and the 5-year overall survival (OS), disease-free survival (DFS), and pCR rate.
Results
The 5-year OS rates were 75.9% and 59.8% in the highand low-PLR groups. The 5-year DFS rates were 62.9% and 50.8% in the high- and low-PLR groups, with no significant difference. In addition, the 5-year OS rates were 75.7% and 58.4%, and the 5-year DFS rates were 62.5% and 50.0% in the high- and low-NLR groups, respectively, both without any significant difference. Multivariate analysis showed only pretreatment PLR as an independent prognostic factor for OS (hazard ratio, 1.850; 95% confidence interval, 1.041–3.287; P=0.036), and both serologic markers were not independent prognostic factors for 5-year DFS.
Conclusion
Neither PLR nor NLR was associated with 5-year DFS nor pCR to neoadjuvant CRT. Only pretreatment PLR can be used in predicting OS in locally advanced rectal cancer patients who received neoadjuvant CRT followed by curative resection.

Citations

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Effect of preoperative pan-immune-inflammation value on clinical and oncologic outcomes after colorectal cancer surgery: a retrospective study
Yun Ju Seo, Kyeong Eui Kim, Woon Kyung Jeong, Seong Kyu Baek, Sung Uk Bae
Annals of Surgical Treatment and Research.2024; 106(3): 169. CrossRef
Systemic Inflammatory Response Following Preoperative Chemoradiotherapy Can Affect Oncologic Outcomes in MSI-H/dMMR Rectal Cancer
Hyukjin Choi, Jin Ho Baek, An Na Seo, Su Yeon Park, Hye Jin Kim, Jun Seok Park, Gyu Seog Choi, Jong Gwang Kim, Byung Woog Kang
Chonnam Medical Journal.2024; 60(2): 105. CrossRef
Prognostic role of platelet-to-lymphocyte ratio in patients with rectal cancer undergoing resection: a systematic review and meta-analysis
Lijuan Ma, Fei Yang, Wentao Guo, Shufang Tang, Yarui Ling
Frontiers in Oncology.2024;[Epub] CrossRef
Predictive and prognostic value of inflammatory markers in locally advanced rectal cancer (PILLAR) – A multicentric analysis by the Italian Association of Radiotherapy and Clinical Oncology (AIRO) Gastrointestinal Study Group
Giuditta Chiloiro, Angela Romano, Silvia Mariani, Gabriella Macchia, Diana Giannarelli, Luciana Caravatta, Pierfrancesco Franco, Luca Boldrini, Alessandra Arcelli, Almalina Bacigalupo, Liliana Belgioia, Antonella Fontana, Elisa Meldolesi, Giampaolo Montes
Clinical and Translational Radiation Oncology.2023; 39: 100579. CrossRef
Prognostic role of platelet-to-lymphocyte ratio, neutrophil-to-lymphocyte, and lymphocyte-to-monocyte ratio in operated rectal cancer patients: systematic review and meta-analysis
Giuseppe Portale, Patrizia Bartolotta, Danila Azzolina, Dario Gregori, Valentino Fiscon
Langenbeck's Archives of Surgery.2023;[Epub] CrossRef
Neutrophil-to-lymphocyte ratio predicts survival of patients with rectal cancer receiving neo-adjuvant chemoradiation followed by radical resection: a meta-analysis
Giuseppe Colloca, Antonella Venturino, Domenico Guarneri
Expert Review of Anticancer Therapy.2023; 23(4): 421. CrossRef
Prognostic prediction of colorectal cancer using the C-reactive protein to albumin ratio: the importance of inflammatory biomarkers and their association with long-term outcomes
Chul Seung Lee
Annals of Coloproctology.2023; 39(4): 287. CrossRef
Impact of Postoperative Naples Prognostic Score to Predict Survival in Patients with Stage II–III Colorectal Cancer
Su Hyeong Park, Hye Seung Woo, In Kyung Hong, Eun Jung Park
Cancers.2023; 15(20): 5098. CrossRef
Body composition parameters combined with blood biomarkers and magnetic resonance imaging predict responses to neoadjuvant chemoradiotherapy in locally advanced rectal cancer
Jianguo Yang, Qican Deng, Zhenzhou Chen, Yajun Chen, Zhongxue Fu
Frontiers in Oncology.2023;[Epub] CrossRef
Inflammatory Response Markers as Predictors of Colorectal Cancer Prognosis
Minsung Kim, Il Tae Son, Bo Young Oh
The Ewha Medical Journal.2023;[Epub] CrossRef
How Can We Improve the Tumor Response to Preoperative Chemoradiotherapy for Locally Advanced Rectal Cancer?
Jeonghee Han
The Ewha Medical Journal.2023;[Epub] CrossRef
Neoadjuvant chemoradiotherapy determines the prognostic impact of anastomotic leakage in advanced rectal cancer
Bo Young Oh, Yoon Ah Park, Jung Wook Huh, Yong Beom Cho, Seong Hyeon Yun, Hee Cheol Kim, Woo Yong Lee
Annals of Surgical Treatment and Research.2022; 103(4): 235. CrossRef
Study on the Relationship between NEUT, NLR, PLR and the Severity of Coronary Artery Disease in Patients with ACS
延春蒋
Advances in Clinical Medicine.2022; 12(11): 9836. CrossRef

Review

Malignant disease, Rectal cancer,Colorectal cancer

Extended lymphadenectomy in locally advanced rectal cancers: a systematic review: Balaji Mahendran, Supriya Balasubramanya, Simone Sebastiani, Sebastian Smolarek; Ann Coloproctol. 2022;38(1):3-12. Published online November 17, 2021; DOI: https://doi.org/10.3393/ac.2021.00703.0100

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Abstract PDF

Purpose
The surgical treatment of advanced low rectal cancer remains controversial. Extended lymphadenectomy (EL) is the preferred option in the East, especially in Japan, while neoadjuvant radiotherapy is the treatment of choice in the West. This review was undertaken to review available evidence supporting each of the therapies.
Methods
All studies looking at EL were included in this review. A comprehensive search was conducted as per PRISMA guidelines. Primary outcome was defined as 5-year overall survival, with secondary outcomes including 3-year overall survival, 3- and 5-year disease-free survival, length of operation, and number of complications.
Results
Thirty-one studies met the inclusion criteria. There was no significant publication bias. There was statistically significant difference in 5-year survival for patient who underwent EL (odds ratio, 1.34; 95 confidence interval, 0.09–0.5; P=0.006). There were no differences noted in secondary outcomes except for length of the operations.
Conclusion
There is evidence supporting EL in rectal cancer; however, it is difficult to interpret and not easily transferable to a Western population. Further research is necessary on this important topic.

Citations

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Performance reporting design in artificial intelligence studies using image-based TNM staging and prognostic parameters in rectal cancer: a systematic review
Minsung Kim, Taeyong Park, Bo Young Oh, Min Jeong Kim, Bum-Joo Cho, Il Tae Son
Annals of Coloproctology.2024; 40(1): 13. CrossRef
Rectal Cancer: Are 12 Lymph Nodes the Limit?
Paweł Mroczkowski, Łukasz Dziki, Tereza Vosikova, Ronny Otto, Anna Merecz-Sadowska, Radosław Zajdel, Karolina Zajdel, Hans Lippert, Olof Jannasch
Cancers.2023; 15(13): 3447. CrossRef
Fluorescence-guided colorectal surgery: applications, clinical results, and protocols
Jin-Min Jung, In Ja Park, Eun Jung Park, Gyung Mo Son
Annals of Surgical Treatment and Research.2023; 105(5): 252. CrossRef
Advances in the Treatment of Colorectal Cancer with Peritoneal Metastases: A Focus on Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy
Youngbae Jeon, Eun Jung Park
The Ewha Medical Journal.2023;[Epub] CrossRef
Cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy versus R0 resection for resectable colorectal cancer with peritoneal metastases and low peritoneal cancer index scores: A collaborative observational study from Korea and Japan
Daichi Kitaguchi, Eun Jung Park, Seung Hyuk Baik, Shoma Sasaki, Yuichiro Tsukada, Masaaki Ito
International Journal of Surgery.2023;[Epub] CrossRef

Original Articles

Malignant disease,Colorectal cancer,Prognosis,Epidemiology & etiology

Clinicopathologic characteristics and survival of patients with double primary malignancies: breast and colorectal cancer: Hyundo Lee, Hae Won Lee, Eun Jung Park, Jeonghyun Kang, Seung Hyuk Baik; Ann Coloproctol. 2022;38(3):197-206. Published online October 18, 2021; DOI: https://doi.org/10.3393/ac.2021.00640.0091

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Abstract PDF Supplementary Material

Purpose
This study aimed to investigate the clinicopathologic features and survival in patients with both breast cancer (BrC) and colorectal cancer (CRC).
Methods
Between 1996 and 2019, patients who were diagnosed with both BrC and CRC were evaluated retrospectively. Patients with distant metastasis, palliative resection, and previous cancer histories except for BrCs or CRCs were excluded. Altogether, 105 patients were divided into the B=C group (n=21), B-first group (n=40), and C-first group (n=44) according to the definition of synchronous and metachronous cancers. The clinicopathologic features and overall survival were evaluated.
Results
TNM stages and histologic types were comparable among the 3 groups (P=0.434). The interval of diagnosis was 67.1±40.4 and 59.3±47.2 months in the B- and C-first groups, respectively. The incidence of adjuvant chemotherapy in the B-first group was 57.5%, which was higher than the B=C and C-first groups (P<0.001). The estrogen receptor, progesterone receptor, Ki-67, and HER-2 molecular markers were not significantly different among the groups. The overall survival of the B-first group showed lower survival rates than the C-first group (P=0.039). In the logistic regression, HER-2 status (hazard ratio [HR], 11.9; P=0.032) and lymph node metastasis of CRC (HR, 5.8; P=0.036) were prognostic factors affecting overall survival.
Conclusion
B-first group had poorer survival outcomes than the C-first group in patients with the metachronous BrC and CRC. HER2 positivity and CRC lymph node metastasis may be prognostic factors that affect overall survival in these patients. The findings support that a colorectal cancer screening program should be included during BrC surveillance.

Citations

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Synchronous or metachronous breast and colorectal cancers in younger-than-average-age patients: a case series
Jordyn Silverstein, Francis Wright, Dalila Stanfield, Amy Jo Chien, Jasmine M Wong, John W Park, Amie Blanco, Katherine Van Loon, Chloe E Atreya
The Oncologist.2024; 29(9): e1159. CrossRef
Synchronous Breast and Colorectal Malignant Tumors—A Systematic Review
Cristian Iorga, Cristina Raluca Iorga, Alexandru Grigorescu, Iustinian Bengulescu, Traian Constantin, Victor Strambu
Life.2024; 14(8): 1008. CrossRef

Malignant disease,Rectal cancer, Prognosis and adjuvant therapy,Colorectal cancer

Effect of Adjuvant Chemotherapy on Elderly Stage II High-Risk Colorectal Cancer Patients: Yujin Lee, Inseok Park, Hyunjin Cho, Geumhee Gwak, Keunho Yang, Byung-Noe Bae; Ann Coloproctol. 2021;37(5):298-305. Published online July 6, 2021; DOI: https://doi.org/10.3393/ac.2020.00829.0118

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Abstract PDF

Purpose
Adjuvant chemotherapy (AC) is recommended for patients with stage II colorectal cancer with adverse features. However, the effect of adjuvant treatment in elderly patients with high-risk stage II colorectal cancer remains controversial. This study aimed to investigate the oncologic outcomes in elderly high-risk stage II colorectal cancer patients who underwent curative resection with or without AC.
Methods
Patients aged over 70 years having stage II colorectal adenocarcinoma with at least 1 adverse feature who underwent radical surgery between 2008 and 2017 at a single center were included. We compared recurrence-free survival (RFS) and overall survival (OS) between patients who received more than 80% of the planned AC cycle (the AC+ group) and those who did not receive it (the AC− group).
Results
The AC+ and AC– group contained 46 patients and 50 patients, respectively. The log-rank test revealed no significant intergroup differences in RFS (P = 0.083) and OS (P = 0.122). In the subgroup of 27 patients with more than 2 adverse features, the AC+ group (n = 16) showed better RFS (P = 0.006) and OS (P = 0.025) than the AC− group. In this subgroup, AC was the only significant factor affecting RFS in the multivariate analysis (P = 0.023). AC was significantly associated with OS (P = 0.033) in the univariate analysis, but not in the multivariate analysis (P = 0.332).
Conclusion
Among elderly patients with stage II high-risk colorectal cancer, the AC+ group did not show better RFS or OS than the AC− group. However, selected patients with more than 2 adverse features might benefit from AC.

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A Prognostic Model Based on the Log Odds Ratio of Positive Lymph Nodes Predicts Prognosis of Patients with Rectal Cancer
Jian Li, Yu zhou Yang, Peng Xu, Cheng Zhang
Journal of Gastrointestinal Cancer.2024; 55(3): 1111. CrossRef
Complete Obstruction, a Real Risk Factor: A Comprehensive Study on Obstruction in Stage IIA Colon Cancer With Propensity Score Matching Analysis
Soo Young Oh, Chan Wook Kim, Seonok Kim, Min Hyun Kim, Young Il Kim, Jong Lyul Lee, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Chang Sik Yu
Clinical Colorectal Cancer.2024; 23(2): 135. CrossRef
Clinical implication of tissue carcinoembryonic antigen expression in association with serum carcinoembryonic antigen in colorectal cancer
Abdulmohsin Fawzi Aldilaijan, Young Il Kim, Chan Wook Kim, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Jihun Kim, Jun-Soo Ro, Jin Cheon Kim
Scientific Reports.2023;[Epub] CrossRef
Advances in the Treatment of Colorectal Cancer with Peritoneal Metastases: A Focus on Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy
Youngbae Jeon, Eun Jung Park
The Ewha Medical Journal.2023;[Epub] CrossRef
Oncologic outcomes in elderly patients who underwent hysterectomy for endometrial cancer: a multi-institutional survey in Kinki District, Japan
Tomohito Tanaka, Suguru Yamashita, Haruo Kuroboshi, Junya Kamibayashi, Atsushi Sugiura, Kaori Yoriki, Taisuke Mori, Kazuharu Tanaka, Aiko Nagashima, Michihide Maeda, Shoji Kamiura, Yukako Mizuno, Noriko Ohtake, Tomoyuki Ichimura, Taiki Kikuchi, Yuri Nobut
International Journal of Clinical Oncology.2022; 27(6): 1084. CrossRef
Does adjuvant chemotherapy improve outcomes in elderly patients with colorectal cancer? A systematic review and meta-analysis of real-world studies
Jianbing Chen, Chengda Zhang, Yajuan Wu
Expert Review of Gastroenterology & Hepatology.2022; 16(4): 383. CrossRef
Risk factors for recurrence in elderly patients with stage II colorectal cancer: a multicenter retrospective study
Takuki Yagyu, Manabu Yamamoto, Akimitsu Tanio, Kazushi Hara, Ken Sugezawa, Chihiro Uejima, Kyoichi Kihara, Shigeru Tatebe, Yasuro Kurisu, Shunsuke Shibata, Toshio Yamamoto, Hiroshi Nishie, Setsujo Shiota, Hiroaki Saito, Takuji Naka, Kenji Sugamura, Kuniyu
BMC Cancer.2022;[Epub] CrossRef
Effects of the Enhanced Recovery After Surgery (ERAS) Program for Colorectal Cancer Patients Undergoing Laparoscopic Surgery
Jeongwon Yeom, Hee-Sook Lim
Clinical Nutrition Research.2022; 11(2): 75. CrossRef
The Prognostic Reliability of Lymphovascular Invasion for Patients with T3N0 Colorectal Cancer in Adjuvant Chemotherapy Decision Making
Hayoung Lee, Seung-Yeon Yoo, In Ja Park, Seung-Mo Hong, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim
Cancers.2022; 14(12): 2833. CrossRef
Is the oncological impact of vascular invasion more important in right colon cancer?
Gyung Mo Son
Journal of Minimally Invasive Surgery.2022; 25(2): 49. CrossRef
Molecular analyses of peritoneal metastasis from colorectal cancer
Chang Hyun Kim
Journal of the Korean Medical Association.2022; 65(9): 586. CrossRef
Epidemiology, risk factors, and prevention of colorectal cancer
Kyung Uk Jung, Hyung Ook Kim, Hungdai Kim
Journal of the Korean Medical Association.2022; 65(9): 549. CrossRef
Molecular Analyses in Peritoneal Metastasis from Colorectal Cancer: A Review-An English Version
Chang Hyun Kim
Journal of the Anus, Rectum and Colon.2022; 6(4): 197. CrossRef
Epidemiology, Risk Factors, and Prevention of Colorectal Cancer-An English Version
Kyung Uk Jung, Hyung Ook Kim, Hungdai Kim
Journal of the Anus, Rectum and Colon.2022; 6(4): 231. CrossRef
Adjuvant chemotherapy benefits on patients with elevated carcinoembryonic antigen in stage IIA colon cancer: a SEER-based analysis
Huabin Zhou, Songsheng Wang, Zhai Cai, Enming Qiu, Qianyun Chen, Xi Rao, Shuai Han, Zhou Li
International Journal of Colorectal Disease.2022; 37(12): 2481. CrossRef
Elderly High-Risk Stage II Colorectal Cancer Patients: Candidates for Improving Outcome?
Min Ki Kim
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Malignant disease

Colorectal Cancer in Octogenarian and Nonagenarian Patients: Clinicopathological Features and Survivals: Soo Min Lee, Jun Sang Shin; Ann Coloproctol. 2020;36(5):323-329. Published online October 31, 2020; DOI: https://doi.org/10.3393/ac.2020.01.19.2

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Abstract PDF

Purpose
Elderly population will comprise a substantial proportion of colorectal cancer (CRC) patients. We examined patients older than 80 years according to their clinical and pathological characteristics to fully understand the elderly patients.
Methods
CRC patients, 60 years or older at diagnosis, admitted between 2009 and 2014 at our hospital were enrolled. The patients were divided into 2 groups: elderly (aged > 80 years, n = 133), and controls (aged 60 to 79 years, n = 596). Patient’s demographics, risk factors for prognosis of CRC, Clinicopathological parameters, treatment, and survival rates were compared.
Results
The mean ages were 83.9 and 64.8 years, respectively. Male-to-female ratio and tumor sidedness were comparable in both groups. Prognostic factors found in univariate analysis; differentiation, stage, lymphovascular invasion, and carcinoembryonic antigen showed no statistical difference. The microsatellite instability status and number of retrieved lymph nodes were also similar (17.2 vs 21.6, P = 0.505). A significant difference was found in the treatment approach for chemotherapy as the elderly patients with stage III and IV tend to have omitted adjuvant (43.6% vs. 92.8%, P < 0.001) or palliative (35.8% vs. 89.4%, P = 0.016) chemotherapy. Except in stage I, elderly patients showed significantly lower overall survival rates.
Conclusion
Current study shows far-elderly patients with CRC were less likely to receive standard treatments, which might have resulted in an inferior outcome. As the number of elderly patients with CRC increase, our results provide a basis for further clinical and molecular investigations of elderly CRC patients.

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Malignant disease,Prognosis and adjuvant therapy,Colorectal cancer,Biomarker & risk factor

Prognostic Factor and Survival Benefit of Adjuvant Chemotherapy in Stage IIA Colon Cancer: Mok-Won Lee, Jin-Su Kim, Ji-Yeon Kim, Kyung-ha Lee; Ann Coloproctol. 2021;37(1):35-43. Published online September 18, 2020; DOI: https://doi.org/10.3393/ac.2020.09.03

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Abstract PDF

Purpose
There is no clear evidence of the benefit of adjuvant chemotherapy (AC) in stage IIA colon cancer. Therefore, we aimed to evaluate the prognostic factors and survival benefit of AC in this disease.
Methods
A retrospective data collection for patients who underwent radical surgery for colon cancer between January 2008 and December 2015 was undertaken. The cohort was divided into the no-AC and AC groups.
Results
We included 227 patients with stage IIA colon cancer in our study cohort, including 67 and 160 patients in the no-AC and AC groups, respectively. The number of retrieved lymph nodes and the presence of tumor complications as obstruction or perforation were independent risk factors for survival. In the no-AC group, there was a significant difference in survival according to the number of retrieved lymph nodes. In the AC group, there were significant differences in survival according to sidedness and preoperative carcinoembryonic antigen (CEA). There was no significant difference in survival between the no-AC and the AC groups.
Conclusion
The number of retrieved lymph nodes and the presence of tumor complications were prognostic factors for stage IIA colon cancer but lymphovascular and perineural invasion were not. Sidedness and preoperative CEA could be used as factors to predict the benefit of adjuvant chemotherapy. Currently, it is believed that there is no benefit of AC for stage IIA colon cancer. Further studies are needed to determine the survival benefit of adjuvant chemotherapy in stage IIA colon cancer.

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Can clinicopathologic high-risk features in T3N0 colon cancer be reliable prognostic factors?
Hyun Gu Lee, Young IL Kim, In Ja Park, Seok-Byung Lim, Chang Sik Yu
Annals of Surgical Treatment and Research.2023; 104(2): 109. CrossRef
Clinical Effectiveness of Fluorescence Lymph Node Mapping Using ICG for Laparoscopic Right Hemicolectomy: A Prospective Case–Control Study
Gyung Mo Son, Mi Sook Yun, In Young Lee, Sun Bin Im, Kyung Hee Kim, Su Bum Park, Tae Un Kim, Dong-Hoon Shin, Armaan M. Nazir, Gi Won Ha
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Su Hyeong Park, Hye Seung Woo, In Kyung Hong, Eun Jung Park
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Hayoung Lee, Seung-Yeon Yoo, In Ja Park, Seung-Mo Hong, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim
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Molecular Analyses in Peritoneal Metastasis from Colorectal Cancer: A Review-An English Version
Chang Hyun Kim
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Adjuvant chemotherapy benefits on patients with elevated carcinoembryonic antigen in stage IIA colon cancer: a SEER-based analysis
Huabin Zhou, Songsheng Wang, Zhai Cai, Enming Qiu, Qianyun Chen, Xi Rao, Shuai Han, Zhou Li
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Chang Hyun Kim
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Malignant disease

Long-term Oncologic Outcome and Its Relevant Factors in Anal Cancer in Korea: A Nationwide Data Analysis: Hyuk Hur, Kyu-Won Jung, Byung-Woo Kim, Chang-Mo Oh, Young-Joo Won, Jae Hwan Oh, Nam Kyu Kim; Ann Coloproctol. 2020;36(1):35-40. Published online February 29, 2020; DOI: https://doi.org/10.3393/ac.2019.07.17

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Abstract PDF Supplementary Material

Purpose
Anal cancer is a rare disease in Korea, and thus survival analyses are limited by small sample sizes. This study used the Korea Central Cancer Registry (KCCR) for a survival analysis and for assessing characteristics of anal cancer in a large sample of Koreans.
Methods
From the KCCR, data on 3,615 patients who were diagnosed and treated for anal cancer from 1993 to 2015 were retrieved. Clinicopathologic variables including age, sex, histological type, and Surveillance Epidemiology and End Results (SEER) stage were reviewed, and a survival analysis was performed according to these variables.
Results
The 5-year relative survival rate improved from 39.7% in 1993–1995 to 66.5% in 2011–2015. Squamous cell carcinoma was the most common and showed the highest survival rate. Males and older patients (≥40 years and ≥70 years) showed poor prognoses.
Conclusion
The survival rate for anal cancer in Korea has improved steadily over time. The characteristics related to survival were the histological type, sex, and age. These statistics will be fundamental for future Korean anal cancer research.

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Risk of Anorectal Cancer Associated with Benign Anal Inflammatory Diseases: A Retrospective Matched Cohort Study
Wonjeong Chae, Seung Yeon Kang, Sung-In Jang, Yoon Dae Han
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K. C. Wilson, M. P. Flood, D. Oh, N. Calvin, M. Michael, R. G. Ramsay, A. G. Heriot
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Acknowledging the Unsung Role of the Cancer Registry in Rare Cancers
Jung-Myun Kwak
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Long-term Transanal Excision Outcomes in Patients With T1 Rectal Cancer: Comparative Analysis of Radical Resection: Yunghuyn Hwang, Yong Sik Yoon, Jun Woo Bong, Hye Yun Choi, In Ho Song, Jong Lyul Lee, Chan Wook Kim, In Ja Park, Seok-Byung Lim, Chang Sik Yu, Jin Cheon Kim; Ann Coloproctol. 2019;35(4):194-201. Published online August 31, 2019; DOI: https://doi.org/10.3393/ac.2018.10.18.2

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Abstract PDF

Purpose
Transanal excision (TAE) is an alternative surgical procedure for early rectal cancer. This study compared long-term TAE outcomes, in terms of survival and local recurrence (LR), with total mesorectal excision (TME) in patients with pathologically confirmed T1 rectal cancer.
Methods
T1 rectal adenocarcinoma patients who underwent surgery from 1990 to 2011 were retrospectively reviewed. Patients that were suspected to have preoperative lymph node metastasis were excluded. Demographics, recurrence, and survival were analyzed based on TAE and TME surgery.
Results
Of 268 individuals, 61 patients (26%) underwent TAE, which was characterized by proximity to the anus, submucosal invasion depth, and lesion infiltration, compared with TME patients (P < 0.001–0.033). During a median follow-up of 10.4 years, 12 patients had systemic and/or LR. Ten-year cancer-specific survival in the TAE and TME groups was not significantly different (98% vs. 100%). However, the 10-year LR rate in the TAE group was greater than that of TME group (10% vs. 0%, P < 0.001). Although 5 of the 6 TAE patients with LR underwent salvage surgery, one of the patients eventually died. The TAE surgical procedure (hazard ratio, 19.066; P = 0.007) was the only independent risk factor for LR.
Conclusion
Although long-term survival after TAE was comparable to that after TME, TAE had a greater recurrence risk than TME. Thus, TAE should only be considered as an alternative surgical option for early rectal cancer in selected patients.

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Review

Clinical Implications of Lymph Node Metastasis in Colorectal Cancer: Current Status and Future Perspectives: Hye Jin Kim, Gyu–Seog Choi; Ann Coloproctol. 2019;35(3):109-117. Published online June 30, 2019; DOI: https://doi.org/10.3393/ac.2019.06.12

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Abstract PDF

Lymph node metastasis is regarded as an indubitable prognostic factor for predicting disease recurrence and survival in patients with colorectal cancer. Lymph node status based on examination of a resected specimen is a key element of the current staging system and is also a crucial factor to determine use of adjuvant chemotherapy after surgical resection. However, the current tumor-node-metastasis (TNM) staging system only incorporates the number of metastatic lymph nodes in the N category. Numerous attempts have been made to supplement this simplified N staging including lymph node ratio, distribution of metastatic lymph nodes, tumor deposits, or extracapsular invasion. In addition, several attempts have been made to identify more specific prognostic factors in resected colorectal specimens than lymph node status. In this review, we will discuss controversies in lymph node staging and factors that may influence survival beyond lymph node status.

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Original Article

Oncologic Outcomes in Patients Who Undergo Neoadjuvant Chemoradiotherapy and Total Mesorectal Excision for Locally Advanced Rectal Cancer: A 14-Year Experience in a Single Institution: Min Jung Kim, Seung-Yong Jeong, Ji Won Park, Seung-Bum Ryoo, Sang Sik Cho, Ki Young Lee, Kyu Joo Park; Ann Coloproctol. 2019;35(2):83-93. Published online April 30, 2019; DOI: https://doi.org/10.3393/ac.2019.04.22.1

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Abstract PDF

Purpose
This study evaluated the oncologic outcomes of locally advanced rectal cancer patients who underwent preoperative neoadjuvant chemoradiotherapy (CRT) followed by surgery and determined the prognostic significance of pathologic complete response (pCR).
Methods
Between January 2002 and December 2015, 580 patients with rectal cancer who underwent surgery after neoadjuvant CRT were identified. Survival according to tumor response to CRT and pathologic stage was analyzed using the Kaplan-Meier method, and the Cox proportional hazard model was used to identify factors associated with survival outcomes.
Results
A total of 111 patients (23.7%) achieved pCR while the other 469 patients showed residual disease. Patients with pCR had a lower pretreatment carcinoembryonic antigen level and earlier cT classification than those with residual disease. With a median follow-up of 78 months, disease-free survival (DFS) and overall survival (OS) were significantly better in the pCR group than in the residual disease group. The 5-year DFS and 5-year OS for patients with ypStage 0, I, II, or III were 92.5%, 85.1%, 72.2%, 54.3% (P < 0.001) and 94.5%, 91.0%, 83.1%, 69.3%, respectively (P < 0.001). Pathologic AJCC stage after CRT was the most statistically significant independent predictor of OS (HR, 6.97 [95% confidence interval, 3.16–15.39] for stage III vs. stage 0) and DFS (HR, 7.30 [95% confidence interval, 3.63–14.67] for stage III vs. stage 0).
Conclusion
Rectal cancer patients who achieved pCR showed improved survival compared to those with residual disease after preoperative CRT. Moreover, pCR was an independent indicator of OS and DFS, and pathologic AJCC stage was correlated with survival after preoperative CRT.

Citations

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A Review of Neoadjuvant Therapy and the Watch-and-Wait Protocol in Rectal Cancer: Current Evidence and Future Directions
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Comparison between Local Excision and Radical Resection for the Treatment of Rectal Cancer in ypT0-1 Patients: An Analysis of the Clinicopathological Factors and Survival Rates
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Precision and Future Medicine.2021; 5(4): 164. CrossRef
From Total Mesorectal Excision to Organ Preservation for the Treatment of Rectal Cancer
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Review

How to Achieve a Higher Pathologic Complete Response in Patients With Locally Advanced Rectal Cancer Who Receive Preoperative Chemoradiation Therapy: Suk-Hwan Lee; Ann Coloproctol. 2019;35(1):3-8. Published online February 28, 2019; DOI: https://doi.org/10.3393/ac.2019.02.17

4,154 View
108 Download
3 Web of Science
3 Citations

Abstract PDF

The current standard of care for treating patients with locally advanced rectal cancer includes preoperative chemoradiation therapy (PCRT) followed by a total mesorectal excision and postoperative adjuvant chemotherapy. A subset of these patients has achieved a pathologic complete response (pCR) and they have shown improved disease-free and overall survival compared to non-pCR patients. Thus, many efforts have been made to achieve a higher pCR through PCRT. In this review, results from various ongoing and recently completed clinical trials that are being or have been conducted with an aim to improve tumor response by modifying therapy will be discussed.

Citations

Citations to this article as recorded by

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David M McDermott, Sarah A Singh, Paul B Renz, Shaakir Hasan, Josh Weir
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Can Pretreatment Blood Biomarkers Predict Pathological Response to Neoadjuvant Chemoradiotherapy in Patients with Locally Advanced Rectal Cancer?
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Future Oncology.2019; 15(28): 3233. CrossRef

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