Types of Anal Tumors
Anal cancer is cancer that starts in the anus. Different types of tumors can form in the anus. Some of these tumors are not cancerous and some are cancerous:
Benign or noncancerous anal tumors. Polyps are small growths that may be flat or bumpy or may look like mushrooms. They are not cancer. There are different types of polyps depending on their location and their cause. Inflammatory polyps, lymphoid polyps, and skin tags (also called fibroepithelial polyps) are examples of different kinds of noncancerous polyps. Other types of benign tumors include adnexal tumors, leiomyomas, granular cell tumors, hemangiomas, lipomas, and schwannomas. These are rare.