Abstract
A 49-year-old woman was admitted to our hospital because of nausea, vomiting and abdominal distension. There was a past history of undergoing total hysterectomy for uterine myoma. Abdominal CT examination revealed an enhanced irregularly shaped mass lesion in the Rs-rectum and confirmed bowel obstruction. Barium enema and colonoscopy revealed stenosis of the rectum with a submusosal tumor. Thes, we performed a laparotomy. Operative findings were a tumor located in the rectum with severe adhesion to other adjacent organs and the pelvis. Low anterior resection with lymph node dissection was performed. The postoperative course was uneventful. The resected specimen revealed endometrial tissue with the stroma in the submucosal and muscular layers of the rectum. In addition, endometrial tissue involved in a metastatic pararectal lymph node (#251). These findings suggested that the tumor in our case might have malignant potential, like endometriosis-associated intestinal tumors (EAIT).
