Abstract:

Family adenomatic polyposis (FAP) is an autosomal dominant transition syndrome characterized by the presence of numerous adenomatic polyps in the gastrointestinal system, especially in the colon and rectum. In this syndrome; bening tumors such as adrenal adenomas, osteomas, desmoid tumors, thyroid and pancreatic cancers, hepaoblastomas, central nervous system tumors and dental anomalies have increased. Here, a 28-year-old patient was presented with a mass complaint on the abdomen wall and was diagnosed with rectum cancer and desmoid tumor developing on the FAP floor. Abstract Family adenomatous polyposis (FAP) is an autosomal dominant syndrome, where polyps develop throughout the gastrointestinal tract, in the colon and the rectum. FAP-related complications, for which medical attention is essential, are not rare and their estimated lifetime risk presumably exceeds 30%. Affected individuals can develop thyroid and pancreatic cancer, hepatoblastomas, CNS tumors (especially medulloblastomas), and various benign tumors such as adrenal adenomas, osteomas, desmoid tumors and dental abnormalities. A 28 year old patient who applied with a mass in the abdominal wall and found to have rectum cancer and desmoid tumor in the background of FAP is presented in this case report. Key words: Desmoid tumor, family adenomatous polyposis, rectal carcinoma

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