currently four methods of sphincter-saving excision are in vogue for carcinomas of the middle and lower rectum -- low anterior resection with or without the aid of the circular stapler , abdomino-sacral ( or abdomino-transphincteric ) resection , abdomino-anal resection with endocavitary sutured colorectal or colo-anal anastomosis , and local excision ( or destruction by diathermy or contact irradiation ) .
C0034896
rectum
C3814448
low anterior resection