What procedure is generally indicated for tumors of the appendix less than 1.5 cm?

For tumors of the appendix that are less than 1.5 cm, the recommended procedure is an appendectomy. This approach is based on the understanding that small appendiceal tumors, such as carcinoid tumors, are typically low-grade and have a favorable prognosis when treated appropriately.

An appendectomy allows for the complete removal of the tumor while preserving surrounding structures when possible, and it is generally considered sufficient for these smaller tumors. The importance of size lies in the low incidence of metastasis associated with tumors of this size, which makes appendectomy a balanced choice that minimizes surgical morbidity while effectively addressing the tumor.

In contrast, larger tumors or those with higher risk features would necessitate more extensive procedures, such as a right colectomy or exploration. Observation might be considered in carefully selected cases without intervention; however, for tumors greater than 1.5 cm or if there are concerning characteristics, intervention becomes necessary. Therefore, the appendectomy is the most suitable approach for small tumors of the appendix, providing effective treatment with minimal risk.