A case of colon perforation due to enteropathy-associated T-cell lymphoma

Figure 1 An abdominopelvic computed tomography shows segmental wall thickening of distal ascending with nonspecific multiple small lymphnodes along ileocolic vessels. Large irregular mass (A) in right ascending colon along hepatic flexure (B).

Figure 2 A gross specimen from the ascending colon after right hemicolectomy. In perforated site, there is an ulcero infiltrative mass measuring 9 cm × 7 cm × 3 cm which is 13 cm away from ileocecal valve and distal resection margin, respectively. The tumor is grayish tan, fish-fresh and appears to extend to serosa.

Figure 3 Histologic features in enteropathy-associated T-cell lymphoma type II. A: The lymphoma cells are small to medium-sized with round, hyperchromatic nuclei (x 400); B: The cells express CD56 (x 400); C, D: The adjacent mucosa shows heavy lymphoid infiltrate (x 200) (C) and CD8 positive intraepithelial lymphocytes (x 400) (D).

Figure 4 Colonoscopy revealed normal mucosa pattern in whole colonic tract.