- Appendiceal neoplasms are rare and typically present as incidental findings upon pathologic examination following appendectomy.
- Right colectomy should be considered for appendiceal adenocarcinoma, except for tumors limited to the submucosa.
- Benign mucinous neoplasms are adequately treated by appendectomy provided resection margins are clear.
- A perforated appendiceal tumor associated with peritoneal mucin should be treated with excision of the perforated lesion, peritoneal washings for cytology, and biopsy of any suspicious peritoneal lesions. Formal cytoreductive surgery should be delayed and performed by a specialized surgeon.
- Neuroendocrine tumors smaller than 2 cm are adequately treated with appendectomy alone.
- Neuroendocrine tumors larger than 2 cm, or those having high-risk features (incomplete resection, location at the base of the appendix, Ki 67 > 2%, lymphovascular or perineural invasion, mesoappendix invasion, grade 2 or greater) should be considered for right hemicolectomy.
There's more to see -- the rest of this topic is available only to subscribers.
Last updated: January 26, 2022
Tan, Sanda A, and Luca Stocchi. "Appendiceal Neoplasms." ASCRS Textbook of Colon and Rectal Surgery, 2022. ASCRS U, www.ascrsu.com/ascrs/view/ASCRS-Textbook-of-Colon-and-Rectal-Surgery/2285027/all/Appendiceal_Neoplasms.
Tan SA, Stocchi L. Appendiceal Neoplasms. ASCRS Textbook of Colon and Rectal Surgery. 2022. https://www.ascrsu.com/ascrs/view/ASCRS-Textbook-of-Colon-and-Rectal-Surgery/2285027/all/Appendiceal_Neoplasms. Accessed June 8, 2023.
Tan, S. A., & Stocchi, L. (2022). Appendiceal Neoplasms. In ASCRS Textbook of Colon and Rectal Surgery https://www.ascrsu.com/ascrs/view/ASCRS-Textbook-of-Colon-and-Rectal-Surgery/2285027/all/Appendiceal_Neoplasms
Tan SA, Stocchi L. Appendiceal Neoplasms [Internet]. In: ASCRS Textbook of Colon and Rectal Surgery. ; 2022. [cited 2023 June 08]. Available from: https://www.ascrsu.com/ascrs/view/ASCRS-Textbook-of-Colon-and-Rectal-Surgery/2285027/all/Appendiceal_Neoplasms.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Appendiceal Neoplasms ID - 2285027 A1 - Tan,Sanda, AU - Stocchi,Luca, Y1 - 2022/01/26/ BT - ASCRS Textbook of Colon and Rectal Surgery UR - https://www.ascrsu.com/ascrs/view/ASCRS-Textbook-of-Colon-and-Rectal-Surgery/2285027/all/Appendiceal_Neoplasms DB - ASCRS U DP - Unbound Medicine ER -