Annals of Coloproctology

Low anterior resection syndrome: is it predictable?: Dong Hyun Kang; Ann Coloproctol. 2023;39(5):373-374. Published online October 30, 2023; DOI: https://doi.org/10.3393/ac.2023.00647.0092

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Colorectal cancer

Outcomes of redo for failed colorectal or coloanal anastomoses: a systematic review and meta-analysis: Ricardo Purchio Galletti, Gabriel Andrade Agareno, Lucas de Abreu Sesconetto, Rafael Benjamim Rosa da Silva, Rafael Vaz Pandini, Lucas Soares Gerbasi, Victor Edmond Seid, Sérgio Eduardo Alonso Araujo, Francisco Tustumi; Ann Coloproctol. 2023;39(5):375-384. Published online December 20, 2022; DOI: https://doi.org/10.3393/ac.2022.00605.0086

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Purpose
This study aimed to review the outcomes of redo procedures for failed colorectal or coloanal anastomoses.
Methods
A systematic review was performed using the PubMed, Embase, Cochrane, and LILACS databases. The inclusion criteria were adult patients undergoing colectomy with primary colorectal or coloanal anastomosis and studies that assessed the postoperative results. The protocol is registered in PROSPERO (No. CRD42021267715).
Results
Eleven articles met the eligibility criteria and were selected. The studied population size ranged from 7 to 78 patients. The overall mortality rate was 0% (95% confidence interval [CI], 0%–0.01%). The postoperative complication rate was 40% (95% CI, 40%–50%). The length of hospital stay was 13.68 days (95% CI, 11.3–16.06 days). After redo surgery, 82% of the patients were free of stoma (95% CI, 75%–90%), and 24% of patients (95% CI, 0%–39%) had fecal incontinence. Neoadjuvant chemoradiotherapy (P=0.002) was associated with a lower probability of being free of stoma in meta-regression.
Conclusion
Redo colorectal and coloanal anastomoses are strategies to restore colonic continuity. The decision to perform a redo operation should be based on a proper evaluation of the morbidity and mortality risks, the probability of remaining free of stoma, the quality of life, and a functional assessment.

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Laparoscopic redo endorectal pull‐through procedure for complex rectovaginal fistula after rectal resection for endometriosis: A Video Vignette
Sergio Eduardo Alonso Araujo, Francisco Tustumi, Ana Sarah Portilho, Lucas de Araujo Horcel, Victor Edmond Seid
Colorectal Disease.2023; 25(11): 2284. CrossRef

AI colonoscopy

The imitation game: a review of the use of artificial intelligence in colonoscopy, and endoscopists’ perceptions thereof: Sarah Tham, Frederick H. Koh, Jasmine Ladlad, Koy-Min Chue, SKH Endoscopy Centre, Cui-Li Lin, Eng-Kiong Teo, Fung-Joon Foo; Ann Coloproctol. 2023;39(5):385-394. Published online March 10, 2023; DOI: https://doi.org/10.3393/ac.2022.00878.0125

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Abstract PDF: The development of deep learning systems in artificial intelligence (AI) has enabled advances in endoscopy, and AI-aided colonoscopy has recently been ushered into clinical practice as a clinical decision-support tool. This has enabled real-time AI-aided detection of polyps with a higher sensitivity than the average endoscopist, and evidence to support its use has been promising thus far. This review article provides a summary of currently published data relating to AI-aided colonoscopy, discusses current clinical applications, and introduces ongoing research directions. We also explore endoscopists’ perceptions and attitudes toward the use of this technology, and discuss factors influencing its uptake in clinical practice.

Colorectal cancer

Outcomes following anastomotic leak from rectal resections, including bowel function and quality of life: Angelina Di Re, Salam Tooza, Jason Diab, Charbel Karam, Mina Sarofim, Kevin Ooi, Catherine Turner, Daniel Kozman, David Blomberg, Matthew Morgan; Ann Coloproctol. 2023;39(5):395-401. Published online April 14, 2022; DOI: https://doi.org/10.3393/ac.2022.00073.0010

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Abstract PDF

Purpose
Anastomotic leak (AL) is an uncommon but potentially devastating complication after rectal resection. We aim to provide an updated assessment of bowel function and quality of life after AL, as well as associated short- and long-term outcomes.
Methods
A retrospective audit of all rectal resections performed at a colorectal unit and associated private hospitals over the past 10 years was performed. Relevant demographic, operative, and histopathological data were collected. A prospective survey was performed regarding patients’ quality of life and fecal continence. These patients were matched with nonAL patients who completed the same survey.
Results
One hundred patients (out of 1,394 resections) were included. AL was contained in 66.0%, not contained in 10.0%, and only anastomotic stricture in 24.0%. Management was antibiotics only in 39.0%, percutaneous drainage in 9.0%, operative abdominal drainage in 19.0%, transrectal drainage in 6.0%, combination of percutaneous drainage and transrectal drainage in 2.0%, and combination abdominal/transrectal drainage in 1.0%. The 1-year stoma rate was 15.0%. Overall, mean Fecal Incontinence Severity Instrument scores were higher for AL patients than their matched counterparts (8.06±10.5 vs. 2.92±4.92, P=0.002). Patients with an AL had a mean EuroQol visual analogue scale (EQ-VAS) of 76.23±19.85; this was lower than the matched mean EQ-VAS for non-AL patients of 81.64±18.07, although not statistically significant (P=0.180).
Conclusion
The majority of AL patients in this study were managed with antibiotics only. AL was associated with higher fecal incontinence scores in the long-term; however, this did not equate to lower quality of life scores.

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The Effect of Post‐Treatment Combined Lifestyle Interventions on Quality of Life in Colorectal Cancer Patients – A Systematic Review
Anke H. C. Gielen, Britt J. M. Thomassen, Tim J. Bult, Jarno Melenhorst, Merel L. Kimman, Stephanie O. Breukink
Lifestyle Medicine.2024;[Epub] CrossRef
Serum nutritional predictive biomarkers and risk assessment for anastomotic leakage after laparoscopic surgery in rectal cancer patients
Paerhati Shayimu, Maitisaidi Awula, Chang-Yong Wang, Rexida Jiapaer, Yi-Peng Pan, Zhi-Min Wu, Yi Chen, Ze-Liang Zhao
World Journal of Gastrointestinal Surgery.2024; 16(10): 3142. CrossRef

Anorectal physioloy

Validation of low anterior resection syndrome score in Brazil with Portuguese: Kelly C.L.R. Buzatti, Andy Petroianu, Søren Laurberg, Rodrigo G. Silva, Beatriz D.S. Rodrigues, Peter Christensen, Antonio Lacerda-Filho, Therese Juul; Ann Coloproctol. 2023;39(5):402-409. Published online May 13, 2022; DOI: https://doi.org/10.3393/ac.2022.00136.0019

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Abstract PDF

Purpose
This study was performed to investigate the convergent validity, discriminative validity, and reliability of the Brazilian version of the low anterior resection syndrome (LARS) score in a population with low educational and socioeconomic levels.
Methods
The LARS score was translated into the Portuguese language by forward- and back-translation procedures. In total, 127 patients from a public hospital in Brazil completed the questionnaires. The convergent validity was tested by comparing the LARS score with the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core Module 30 (QLQ-C30) and with patients’ self-reported quality of life. For the discriminative validity, we tested the ability of the score to differentiate among subgroups of patients regarding neoadjuvant radiotherapy, type of surgery, and tumor distance from the anal verge. The test-retest reliability was investigated in a subgroup of 36 patients who responded to the survey twice in 2 weeks.
Results
The LARS score demonstrated a strong correlation with 5 of 6 items from the EORTC QLQ-C30 (P<0.05) and good concordance with patients’ self-reported quality of life (95.3%), confirming the convergent validity. The score was able to discriminate between subgroups of patients with different clinical characteristics related to LARS (P<0.001). The agreement between the test and retest showed that 86.1% of the patients remained in the same LARS category, and there was no significant difference between the LARS score numerical values (P=0.80), indicating good reliability overall.
Conclusion
The Brazilian version of the LARS score is a valid and reliable instrument to assess postoperative bowel function in a population with low educational and socioeconomic levels.

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Validation of the Vietnamese version of the low anterior resection syndrome score questionnaire
Tuong-Anh Mai-Phan, Vu Quang Pham
Annals of Coloproctology.2022;[Epub] CrossRef

Colorecal cancer

Prognostic significance of lymph node yield on oncologic outcomes according to tumor response after preoperative chemoradiotherapy in rectal cancer patients: Hyo Seon Ryu, In Ja Park, Bo Kyung Ahn, Min Young Park, Min Sung Kim, Young Il Kim, Seok-Byung Lim, Jin Cheon Kim; Ann Coloproctol. 2023;39(5):410-420. Published online April 28, 2022; DOI: https://doi.org/10.3393/ac.2022.00143.0020

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Graphical Abstract Abstract PDF

Purpose
This study aimed to evaluate the predictive value of lymph node yield (LNY) for survival outcomes according to tumor response after preoperative chemoradiotherapy (PCRT) in patients with rectal cancer.
Methods
This study was a retrospective study conducted in a tertiary center. A total of 1,240 patients with clinical stage II or III rectal cancer who underwent curative resection after PCRT between 2007 and 2016 were included. Patients were categorized into the good response group (tumor regression grade [TRG], 0–1) or poor response group (TRG, 2–3). Propensity score matching was performed for age, sex, and pathologic stage between LNY of ≥12 and LNY of <12 within tumor response group. The primary outcome was 5-year disease-free survival (DFS) and overall survival (OS).
Results
LNY and positive lymph nodes were inversely correlated with TRG. In good responders, 5-year DFS and 5-year OS of patients with LNY of <12 were better than those with LNY of ≥12, but there was no statistical significance. In poor responders, the LNY of <12 group had worse survival outcomes than the LNY of ≥12 group, but there was also no statistical significance. LNY of ≥12 was not associated with DFS and OS in multivariate analysis.
Conclusion
LNY of <12 showed contrasting outcomes between the good and poor responders in 5-year DFS and OS. LNY of 12 may not imply adequate oncologic surgery or proper staging in rectal cancer patients treated by PCRT. Furthermore, a decrease in LNY should be comprehended differently according to tumor response.

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Effects of Adjuvant Chemotherapy on Oncologic Outcomes in Patients With Stage ⅡA Rectal Cancer Above the Peritoneal Reflection Who Did Not Undergo Preoperative Chemoradiotherapy
Hyo Seon Ryu, Jong Lyul Lee, Chan Wook Kim, Yong Sik Yoon, In Ja Park, Seok-Byung Lim, Yong Sang Hong, Tae Won Kim, Chang Sik Yu
Clinical Colorectal Cancer.2024;[Epub] CrossRef
Multidisciplinary Treatment Strategy for Early Colon Cancer: A Review-An English Version
Gyung Mo Son, Su Bum Park, Tae Un Kim, Byung-Soo Park, In Young Lee, Joo-Young Na, Dong Hoon Shin, Sang Bo Oh, Sung Hwan Cho, Hyun Sung Kim, Hyung Wook Kim
Journal of the Anus, Rectum and Colon.2022; 6(4): 203. CrossRef

Anorectal benign disease

Fournier gangrene with concurrent multifocal necrotizing fasciitis: a systematic review and case report: Jessica A. Paynter, Kirby R. Qin, Dongrong Situ, Chun Hin Angus Lee; Ann Coloproctol. 2023;39(5):421-426. Published online May 26, 2022; DOI: https://doi.org/10.3393/ac.2022.00192.0027

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Abstract PDF

Purpose
A patient presented to a regional surgical center with Fournier gangrene (FG) and concurrent multifocal necrotizing fasciitis (NF). Given the rarity, it was decided to undertake a systematic review to investigate the incidence and prevalence of FG with multifocal NF and consequently determine the treatment and approach to management of such presentation.
Methods
Firstly, the report of the 56-year-old male patient is discussed regarding his surgical management. Secondly, a systematic review was undertaken according to PRISMA guidelines using MEDLINE, Scopus, and Embase databases. Searches used the following MeSH terms: (“fournier’s gangrene”) AND ((necrotising fasciitis) OR (necrotising soft tissue infection)). Once the search results were obtained, duplicate articles were removed. Titles, abstracts, and articles were reviewed by 2 authors.
Results
The search strategy using the 3 databases revealed a total of 402 studies. Fifty-seven studies were removed due to duplication. A total of 345 records were screened via title and abstract, of which 115 were excluded. Two hundred and thirty studies were reviewed for eligibility. A total of all 230 studies were excluded; 169 were excluded as they included the incorrect patient population (patients suffered from FG or NF, but not both collectively), 60 studies were excluded due to incorrect study designs, and 1 report occurred in the wrong setting.
Conclusion
This highlights that while being a relatively known, uncommon infection both FG and NF are well documented separately within the literature. However, FG with concurrent multifocal NF has not been documented within the literature.

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FOURNIER'S GANGRENE: A CASE REPORT
Serhiy Morozov, Mariia Matvieienko, Tetiana Kozlova
Eastern Ukrainian Medical Journal.2024; 12(2): 448. CrossRef
Fournier's gangrene complicated by lower limb necrotising fasciitis and pelvic bone osteomyelitis: A case report with literature review
Joshua Chek Hao Foo, Ernest Junrui Lim, Alvin Yuanming Lee, Yadong Lu
International Journal of Surgery Case Reports.2024; 121: 109974. CrossRef

Anorectal physioloy

Risk factors associated with low anterior resection syndrome: a cross-sectional study: See Liang Lim, Wan Zainira Wan Zain, Zalina Zahari, Andee Dzulkarnaen Zakaria, Mohd Nizam Md Hashim, Michael Pak-Kai Wong, Zaidi Zakaria, Rosnelifaizur Ramely, Ahmad Shanwani Mohamed Sidek; Ann Coloproctol. 2023;39(5):427-434. Published online June 3, 2022; DOI: https://doi.org/10.3393/ac.2022.00227.0032

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Graphical Abstract Abstract PDF Supplementary Material

Purpose
Oncological outcomes following rectal cancer surgery have improved significantly over recent decades with lower recurrences and longer overall survival. However, many of the patients experienced low anterior resection syndrome (LARS). This study identified the prevalence and risk factors associated with the development of LARS.
Methods
This cross-sectional study involved patients who were diagnosed with rectal cancer and had undergone sphincter-preserving low anterior resection from January 2011 to December 2020. Upon clinic follow-up, patients were asked to complete an interviewed based questionnaire (LARS score) designed to assess bowel dysfunction after rectal cancer surgery.
Results
Out of 76 patients, 25 patients (32.9%) had major LARS, 10 patients (13.2%) had minor LARS, and 41 patients (53.9%) had no LARS. The height of tumor from anal verge showed an association with the development of major LARS (P=0.039). Those patients with less than 8 cm tumor from anal verge had an increased risk of LARS by 3 times compared to those with 8 cm and above (adjusted odds ratio, 3.11; 95% confidence interval, 1.06–9.13).
Conclusion
Results from our study show that low tumor height was a significant risk factor that has a negative impact on bowel function after surgery. The high prevalence of LARS emphasizes the need for study regarding risk factors and the importance of understanding the pathophysiology of LARS, in order for us to improve patient bowel function and quality of life after rectal cancer surgery.

Citations

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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
Low anterior resection syndrome: is it predictable?
Dong Hyun Kang
Annals of Coloproctology.2023; 39(5): 373. CrossRef

Benign bowel disease

Successful detection and removal of predictable juvenile polyp: a case report: Kwang Yeon Kim, Jin Su Kim; Ann Coloproctol. 2023;39(5):435-438. Published online July 21, 2021; DOI: https://doi.org/10.3393/ac.2021.00311.0044

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Abstract PDF: Juvenile polyp makes up 70% to 80% of pediatric colon polyp, and the average age of diagnosis is 2 to 5 years. The treatment of juvenile polyp in children is polypectomy through colonoscopy. The fact that the lumen of intestine is much smaller than that of adults and the need to perform polypectomy is a heavy burden on the endoscopists. Recently, fecal calprotectin (FC) has been found to be related to juvenile polyp. A previously healthy 34-month-old female patient presented to the pediatric gastroenterology department with intermittent bloody stools that were progressively worsening. FC level was abnormally elevated at 2,719 µg/g (normal, < 50 µg/g). The polyp was successfully removed with a endoscopic polypectomy. This is the first case in Korea to show that FC can be used to screen juvenile polyp in children. Caution must be taken that FC levels can increase with inflammation, regardless of the number or size of the polyps.

Colorectal cancer

Immune checkpoint therapy in colorectal cancer: is first better than last?: Yui Kaneko, Zainab Naseem, Neil Strugnell, Frances Barnett, Basil D’Souza, Ankur Sidhu, Andrew Bui, Toan Pham; Ann Coloproctol. 2023;39(5):439-441. Published online October 4, 2023; DOI: https://doi.org/10.3393/ac.2023.00248.0035

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Anorectal benign disease

Comments on “Laser hemorrhoidoplasty versus conventional hemorrhoidectomy for grade II/III hemorrhoids: a systematic review and meta-analysis”: Mohamed Ali Chaouch, Amine Gouader, Bassem Krimi, Hani Oweira; Ann Coloproctol. 2023;39(5):442-443. Published online October 30, 2023; DOI: https://doi.org/10.3393/ac.2023.00206.0029

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Erratum to “Prognostic factors affecting disease-free survival and overall survival in T4 colon cancer”: Ann Coloproctol. 2023;39(5):444-444. Published online October 30, 2023; DOI: https://doi.org/10.3393/ac.2020.00759.0108.e1; Corrects: Ann Coloproctol 2021;37(4):259

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