Abstract

We report 65-year-old woman with a tumor in the rectal wall. Seven years ago, she was operated on for stage Ia endometrial adenocarcinoma. In spite of a CT-guided biopsy, we could not diagnose whether the tumor was primary or metastatic. We performed the surgical operation to diagnose and remove the rectal tumor. The surgically removed rectal tumor was examined by an expert pathologist. It would be the most probable that the rectal tumor was derived from the endometrial adenocarcinoma of uterus. We discuss how does it relapse. We considered that the rectal tumor might be the result of perioperative implantation.