A Case Report of Ascending Colon Cancer that Coexisted with Noncirrhotic Portal-systemic Encephalopathy

Abstract

The patient was an 80-year-old woman who underwent a medical examination because of exertional dyspnea and disturbance of consciousness. She was diagnosed with ascending colon cancer with co-existing portal-systemic encephalopathy due to a shunt between the superior mesenteric vein and the right ovarian vein. Balloon-occluded retrograde transvenous obliteration of the shunt was performed before surgery for the ascending colon cancer to reduce the perioperative risk of complications. The patient's postoperative course was uneventful.

In portal-systemic encephalopathy that coexists with resectable cancer, the treatment should be carefully planned considering the severity of encephalopathy, the location and shape of the shunt, and the location of the cancer.