A 37-year old man was involved in an accident 7 years before presentation. At that time, a diverting colostomy of the descending colon had been necessary because of extensive perineum and rectal injuries. Seven years later, the patient presented with an intestinal obstruction 25 days after restoration of bowel continuity. CT of the abdomen showed a mass at the site of the anastomosis measuring 10 × 10 × 10 cm. At laparotomy, this mass was resected, and a side-to-side antiperistaltic anastomosis was again created. Microscopic examination of hematoxylin-eosin–stained sections of the resected anastomosis was performed (figures 1 and 2).
Hematoxylin-eosin stain of a section of the resected mass (original magnification, ×40). The dimensions of the largest longitudinally sectioned oval structures are approximately 55 × 25 μm.
Hematoxylin-eosin stain of a section of the resected mass (original magnification, ×40). The dimensions of the largest longitudinally sectioned oval structures are approximately 55 × 25 μm.
A detail of the resected mass at higher magnification (original magnification, ×100), showing a deviant structure
A detail of the resected mass at higher magnification (original magnification, ×100), showing a deviant structure
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