Jump to What are other types of anal masses or growths? - Not all growths in the anal region are cancers. A benign growth of tissue on a short stalk is called a pedunculated polyp. Skin Cancer Symptoms, Types, Images. Jun 11, - Perianal hematomas are very similar to hemorrhoids and often misdiagnosed as such. They are actually a burst blood vessel near the anus, causing a pool of blood to form underneath the skin. These bumps are usually caused by straining or trauma to the area and can be very painful.Treatment for hemorrhoids · How to tell mollusca from.