Mesenteric desmoid tumor of the interposed jejunal pouch after total gastrectomy

Abstract

Background: Desmoid tumor is a rare entity, and most desmoid tumors are located in abdominal wall or extra-abdominal tissues. Occurrence of desmoid tumor in mesentry is extremely rare.

Case presentation: we report a mesenteric desmoid tumor in a 73-years-old woman who had undergone total gastrectomy reconstructed with jejunal pouch interposition for gastric carcinoma. After 1 year, a tumor was originating from mesentery of the interposed jejunal pouch was identified, and the patient underwent resection of the large mass which was found to invade pancreas. Histological examination revealed desmoid tumor.

Conclusion: Desmoid tumor is rare, and it was difficult for the differential diagnosis of desmoid tumor or recurrent tumor.

Figure 1

Computed tomography (CT) shows round-shaped solid mass at the right side of the reconstructed jejunal pouch, and invaded into pancreas (arrow).

Figure 2

Magnetic resonance imaging (MRI) showed a low signal intensity of the mass in both T1-weighted (left) and T2-weighted images (right).

Figure 3

The tumor was an elastic hard and white mass, and the size was 50 × 50 × 63 mm. It originated from the interposed mesenterium.

Figure 4

The tumor was composed of spindle-shaped fibroblasts and copious collagen fibers by hematoxylin and eosin stain (H&E). (A: × 100 B: × 400).