An angiolipoma is a subcutaneous nodule with vascular structure.

A benign nodule/tumor that contains blood vessels (vascular) and fat cells. They can be painful due to vascular infiltration on surrounding nerves, tissues, or even muscle & bones in rarer cases. They tend to range in size from pea to half dollar. If painful & causing symptoms, treatment is to remove surgically. They may re-occur even after removal. There is currently no known cause as to why these grow. If a person has one, there is good probability to develop more.