[Intraosseous lipomas (author's transl)].

This is a report on four intraosseous lipomas. One in the tibia diapysis of an infant, one in the fibula head, one in the proximal epimetaphysis of the humerus, and one in the calcaneus of three adults. Together with fourty-two intraosseous lipomas which have been reported by other authors, they are evaluated via clinical, radiological, and pathological aspects. The metaphyses of long bones and the calcaneus are common localizations of intraosseous lipomas. There may be no clinical symptoms or non-specific ones. The history may last for decades. Trabecular structures are noted usually on x-ray and almost always on histological examination. A capsule, capillaries, and the lack of sinusoids and haemopoietic bone marrow demonstrate the neoplastic nature of intraosseous lipomas. Because of their good prognosis intraosseous lipomas may be treated conservatively or by curettage.