Calcaneal intraosseous lipoma


This is a case of intraosseous lipoma of right calcaneal bone . It is composed of fat cells that replace the resorbed  bone trebeculae. The former my undergoes degenerative process that ends up with cystic spaces and dystrophic calcifications  inside the lipoma.


Stages of calcaneal lipoma :

Stage I : The  lesion composed of  lipocytes, similar to the cells of subcutaneous adipose tissue.

Stage II:  Necrotic foci and foci of reactive osteogenesis are present.

Stage III:  Advanced necrotic lesions with focal calcifications and cystic degeneration.