Intraosseous lipoma of the calcaneus: a review and report of four cases.

Intraosseous lipomas have been reported as rare tumors in the lower extremity. They have been identified in the tibia, fibula, metatarsals, and calcaneus. They are frequently misdiagnosed as other tumors, especially unicameral bone cysts or aneutysmal bone cysts when found within the calcaneus.