- Painful benign subcutaneous lesion
- Most common in young adults, with a predilection for the upper limbs
- Multiple lesions have been reported associated with diabetes mellitus or HAART.
- Encapsulated subcutaneous lesion composed of mature adipocytes admixed with foci of anastamosing networks of small blood vessels
- Some of the blood vessels contain fibrin thrombi.
- If the blood vessels make up the majority of the tumor, the term "cellular angiolipoma" is used.