A CASE OF COLON CANCER WITH AN UNUSUAL GROWTH PRESENTED WITH URETHEROSTENOSIS

Abstract

A 73-year-old woman complaining of lumbago was referred to the hospital with a diagnosis of left hydronephrosis. Retrograde pyelography showed a stenosis of the left ureter. Abdominal CT scan demonstrated a tumor of the sigmoid colon adjacent to the left ureter and multiple liver metastasis. Barium enema study and colonofiberscopy revealed no tumor except diverticulosis in the sigmoid colon. We performed an operation a suspicin of cancer of the sigmoid colon with an extramural progeression. Sigmoidectomy and a partial resection of the ureter were carried out. On the resected material, only slight erosion was present on the mucosa, but extramural progression of the tumor was main. Pathological findings showed moderately differentiated adenocarcinoma, si, ly2, V1, and n2. Multiple diverticula were scattered in the vicinity of the tumor. It is etiologicaly thougt that the reason why the tumor in this case disclosed such a specific growth pattern lies in the origin of the colon cancer which might be these diverticula.