Abdominoperineal Resection
Also written as: APR — Abdominoperineal Resection
Surgical procedure removing the rectum, anus, and surrounding tissues through combined abdominal and perineal approaches.
Full Definition
Abdominoperineal resection (APR) is a major oncologic procedure primarily used for low rectal cancers that cannot be treated with sphincter-preserving surgery. The operation involves removing the rectum, anus, anal sphincters, and surrounding mesorectal tissue through both abdominal and perineal incisions. This results in a permanent colostomy. The procedure is considered when tumors are too close to the anal sphincters or when adequate distal margins cannot be achieved with anterior resection.
Usage
Usage note: Often abbreviated as APR in clinical documentation. Distinguish from anterior resection which preserves the anal sphincter.
In Context
- "The patient underwent abdominoperineal resection for T3 rectal adenocarcinoma located 2 cm from the anal verge." — operative report
- "Given the tumor's proximity to the sphincter complex, abdominoperineal resection was deemed necessary to achieve oncologic clearance." — preoperative consultation note