Massive desmoid tumor
History of prophylactic total colectomy 3 years ago, with new abdominal mass.
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Very large, relatively well-circumscribed mass filling the abdominal cavity. Bilateral ureteral obstruction due the mass (likely compressive). Total colectomy.
Desmoid tumor was pathologically proven and the mass surgically removed.
Patients with familial adenomatous polyposis (FAP) are at increased risk of desmoid tumors, particularly after surgery (most commonly for prophylactic total colectomy). It is an important cause of morbidity and mortality in this patient group. In this case, the tumor was detected three years after surgery.
- Lynch HT, Fitzgibbons R. Surgery, desmoid tumors, and familial adenomatous polyposis: case report and literature review. (1996) The American journal of gastroenterology. 91 (12): 2598-601. Pubmed