Liposclerosing myxofibrous tumor (LSMFT), a study of 33 patients: should it be a distinct entity?

Liposclerosing myxoid fibrous tumor (LSMFT) is a recently described bone lesion site specific to the proximal femur. We have studied the radiographs and clinical features of 33 patients with this disorder. Histologic material was available for study in 18 of these patients. Histologic study revealed that 12 of these 18 had an underlying fibrous dysplasia and these had an underlying intraosseous lipoma. Because of this histologic evidence as well as the radiographic spectrum of the other lesions, we conclude that LSMFT is not a specific lesion and use of the term should be discontinued.