A case of rectal leiomyoma successfully treated by endoscopic mucosal resection with a detachable snare

Abstract

A 55-year-old male was admitted to our hospital because of examination of multiple liver metastasis and sigmoid colon cancer. The endoscopic view showed the submucosal tumor of 15mm in the rectum other than sigmoid colon cancer. Ultrasonic image showed a hypoechoic mass in the third layer. Endoscopic mucosal resection as a total biopsy using a ligating device (EMR-L) was chosen. But O-ring was attached the top of tumor because tumor size was large. The bottom of the tumor was constricted with using detachable snare. Tumor was successfully resected with wire snare at the bottom of the tumor beyond detachable snare. Pathological examination revealed that spindle cells were arranged in interlacing bundles, and α SMA staining showed positive reaction, which was consistent with a diagnosis of leiomyoma. There are various methods of endscopic therapy for the submucosal tumor. In our case, submucosal tumor was successfully treated by endoscopic mucosal resection with a detachable snare.