title: Hibernoma, an uncommon tumor as a differential diagnosis of liposarcoma of the thigh.
abstract: Hibernomas are benign tumors derived from brown fat of hibernating animals and of human infants. The pathogenesis and malignant potential of hibernomas remain unclear. They occur generally in adults with a peak incidence in the third decade and with a predominance in women. However, the lesions may have an heterogeneous presentation that may mimic liposarcomas on MRI. Our report presents a case of hibernoma of the thigh whose the diagnosis initially suggested that it was a mixed liposarcoma with myxoid and well differentiated components.
authors.affiliation: Medical Oncology Department, Salpetrière Hospital, 47 boulevard de l'Hôpital, 75651 Paris, France. jean-philippe.spano@psl.ap-hop-paris.fr
authors.forename: J P
authors.initials: JP
authors.lastname: Spano
authors.forename: S
authors.initials: S
authors.lastname: Taillibert
authors.forename: D
authors.initials: D
authors.lastname: Khayat
authors.forename: P
authors.initials: P
authors.lastname: Terrier
mesh_terms: D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008067:Lipoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008080:Liposarcoma / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D009232:Myxoma / Q000175:diagnosis