What is the typical treatment approach for a carcinoid tumor in the rectum?

In the context of carcinoid tumors located in the rectum, the typical treatment approach is transanal excision. Carcinoid tumors, which are neuroendocrine tumors, often grow slowly and can be relatively small when diagnosed. When they occur in the rectum, transanal excision allows for complete removal of the tumor while minimizing the morbidity associated with more extensive surgical procedures.

For small, localized carcinoid tumors that do not exhibit evidence of aggressive behavior (such as metastasis), transanal excision is favored because it is less invasive and allows for preservation of bowel function. Careful pathological assessment following excision is important to ensure complete removal and to evaluate for any high-risk features that might necessitate a more aggressive approach.

Other strategies like radical resection may be reserved for larger tumors or those with concerning histological features, while watchful waiting is typically not a standard practice for symptomatic tumors. Chemotherapy is not a primary treatment for carcinoid tumors in the rectum, as these tumors are generally resistant to standard chemotherapy regimens.