We report on two cases of villous neoplasm in the rectum that were resected by ESD.
Case 1 : A 57-year-old man had copious mucous stool ; colonoscopy demonstrated villous neoplasm occupying three-fourths of the circumference of the rectosigmoid portion. We performed ESD in 515 minutes and enabled en bloc resection. A pathological examination showed a 148×142 mm cancer in the villous adenoma, sm 4,000 µm, and additional surgery was performed (no remaining tumor and no lymph node metastasis) .
Case 2 : A 64-year-old-man had severe diarrhea and electrolyte depletion syndrome (EDS) . Colonoscopy demonstrated villous neoplasm that occupied the entire circumference of the lower rectum. We performed en bloc resection in 865 minutes by ESD. A pathological examination showed a 192×180 mm, villous adenoma with high-grade dysplasia. The patient needed steroid injection and balloon dilation to prevent stenosis after treatment. This patient has currently no stenosis in the lower rectum.
