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HOME > J Korean Soc Coloproctol > Volume 24(1); 2008 > Article
Original Article
Desmoid Tumor in Familial Adenomatous Polyposis (FAP).
Kim, Dae Dong , Yu, Chang Sik , Hong, Dong Hyun , Jung, Sang Hun , Choi, Pyong Wha , Park, In Ja , Kim, Hee Cheol , Kim, Jin Cheon
Journal of the Korean Society of Coloproctology 2008;24(1):20-26
DOI: https://doi.org/10.3393/jksc.2008.24.1.20
Colorectal Clinic, Department of Surgery, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea. csyu@amc.seoul.kr
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Abstract

PURPOSE
This research was conducted to assess the incidence, clinical characteristics, and treatment outcomes for desmoid tumors in patients with familial adenomatous polyposis (FAP). METHODS: At Medical Center, we recruited 47 patients who had been diagnosed as having intraabdominal or abdominal wall desmoid tumor between Aug. 1995 and Dec. 2005. We compared FAP-associated desmoid tumors with non-FAP-associated desmoid tumors according to clinical characteristics and treatment outcomes. RESULTS: Desmoid tumors developed 12/46 (26.1%) in FAP, 1/14 (7.1%) in attenuated FAP and 34 in non-FAP associated. Unlike non-FAP-associated desmoid tumors, the occurrence of FAP-associated desmoid tumors in tended to be higher in the earlier age groups (< or =40 yrs, 92.3% vs 67.6%, P=0.082) and no sexual predominancy was observed (male:female ratio of 1.2:1 vs a tumor ratio 1:3.9, P=0.033). Intraabdominal-type desmoid tumors associated for the majority of FAP-associated desmoid tumors (92.3% vs 38.2%, P=0.002), and 70% of the desmoid tumors occurred within 3 years after total proctocolectomy. In the treatment of FAP-associated intraabdominal desmoid tumors, surgery was performed in 7 cases (58.3%), and complete resections were done in only 3 cases (25%), with one recurrence. In non-FAP-associated desmoid tumors, complete resection was possible in 10 cases (76.9%), and there was no recurrence (P=0.036). The medical treatment for unresectable or incompletely resectable cases in cases of non-FAP-associated desmoid tumor was good, but for FAP-associated desmoid tumors, the effectiveness was not good, and further investigation was needed. CONCLUSIONS: Intraabdominal desmoid tumors in FAP patients occurred frequently in the early (< or =3 yrs) postoperative period, and the treatment, outcome including surgery and medication, outcome was not good in patients with FAP-associated desmoid tumors.

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