title: Abdominal desmoid masses in Gardner's syndrome.
abstract: Abdominal masses, "desmoid tumors,"  occur in approximately 4% of patients with Gardner's Syndrome, usually 1--3 years after total colectomy. Histologic sections usually resemble those of an infiltrating fibrous tumour, a desmoid lesion. The radiographic pattern may be similar to any diffuse abdominal retroperitoneal tumor, metastatic disease, lymphoma, or possibly retractile mesenteritis. The clinical setting usually differentiates these entities.
mesh_terms: D000008:Abdominal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D000328:Adult; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging* / Q000235:genetics; D006801:Humans; D007417:Intestinal Polyps / Q000000981:diagnostic imaging* / Q000235:genetics; D008297:Male; D010016:Osteoma / Q000235:genetics; D011859:Radiography; D013577:Syndrome