A 67-year old woman with a history of long-term Chinese herb use was admitted to our institution complaining of abdominal pain. Barium enema disclosed rigidity of throughout the proximal colon and a slightly elevated lesion in the transverse colon. Colonoscopy showed diffuse and bronze mucosa in the proximal colon, which was compatible with mesenteric phlebosclerosis. There was also a reddish, elevated lesion in the transverse colon. Magnifying colonoscopy revealed irregular microsurface and microvessels on the surface of the lesion. Under a diagnosis of intramucosal cancer, the elevated lesion was treated by endoscopic submucosal dissection. Histological examination of the resected specimen showed intramucosal well-differentiated adenocarcinoma, and fibrous thickening of the vascular wall together with collagen deposition in the submucosa. The final diagnosis was an intramucosal cancer occurring in mesenteric phlebosclerosis.
All Science Journal Classification (ASJC) codes