Femoral intraosseous lipoma: Case report

Abstract

Introduction: Intraosseous lipoma is an extremely rare lesion that represents no more than 0.1% of all bone tumors. It is often misdiagnosed, unlike other benign bone lesions. With the combination of radiography, computed tomography (CT) and magnetic resonance imaging (MRI), the diagnosis can be done without histological confirmation.Case Report: A 42-year-old man presented with a history of progressive left femoral pain radiating to his buttock and benefited from plain radiographs of the left hip showed a lytic lesion containing a central calcification and surrounded by sclerotic margins in the intertrochanteric region of the proximal femur. The patient underwent further evaluation with CT and MRI. Based on the results to the MRI and CT scan, intraosseous lipoma was confirmed and the need for further diagnostic tests has been eliminated. Conclusion:We reported a rare case of symptomatic intraosseous lipoma of the femoral bone, which was difficult to diagnose on only plain radiographs. This showed the interest of MRI in the elimination of differential diagnosis and the confirmation of intraosseous lipoma.