A Case of Colonic Obstruction due to Invasion of the Transverse Colon by Malignant Lymphoma of the Spleen

Abstract

Primary splenic neoplasms are rare. We report a case of colonic obstruction due to invasion of the transverse colon by a splenic lymphoma. A 75-year-old man complaining of abdominal distension was admitted to our hospital. Computed tomography revealed colonic obstruction. Colonic stent placement was performed, but no findings suggestive of colon cancer were noted on colonoscopy. Further examinations revealed a primary splenic tumor invading the pancreatic tail, diaphragm and transverse colon. Splenectomy was performed in combination with partial colonic resection. Histologically, the splenic tumor was diagnosed as a diffuse large B-cell lymphoma. One month after the operation, the patient was diagnosed as having gastric and liver metastasis and was administered chemotherapy (R-CHOP). As of 6 months after the operation, the patient has been receiving chemotherapy.