Abstract
A 75-year-old man admitted for intestinal obstruction was found in abdominal computed tomography (CT) to show a target sign on the ascending colon, and gastrografin enema showed a cup-like filling or ring-like colon defect at the same place. Colonoscopy showed a type 2 cecal tumor from which biopsied specimens demonstrated malignant lymphoma, necessitating ileocecal resection. Histologically, the B cell tumor was found to be malignant lymphoma of the non-Hodgkin diffuse medium cell type. After undergoing adjuvant R-CHOP chemotherapy, he has shown no recurrence in 8 months. We report this case with a review of the Japanese literature because intussusception in adults due to malignant colon lymphoma is extremely rare.
