Abdominoperineal Resection

**Semantic type:** Therapeutic or Preventive Procedure

**Definition:** A therapeutic surgical procedure in which the anus, rectum, part of the sigmoid colon, and the regional lymph nodes are removed through abdominal and perineal incisions.

**Synonyms:** - APR - Abdominal Perineal Resection - Abdomino-perineal Resection of Rectum - abdominoperineal resection