Female, 23 years old. Assess fracture and proximal femur lesion. ACETABULAR LABRUM: The labrum is grossly intact within the limits of a nonarthrographic study.ARTICULAR CARTILAGE AND BONE: The lesion in the left femur involves the subarticular femoral head (within 1 cm of the cartilage), the greater and lesser trochanters, as well as the proximal femoral diaphysis. The lesion is expansile and shows diffuse T1 hypointensity and heterogeneously increased T2 signal, with thinning of the overlying cortex. There is a minimally displaced fracture through the this lesion in the intertrochanteric region. There is a moderate effusion. The right hip and other visualized bones of the pelvis are normal.SOFT TISSUES: There is edema and fluid in the soft tissues surrounding the fracture. ADDITIONAL
1.Expansile lesion in the left proximal femur may reflect a unicameral bone cyst versus possibly fibrous dysplasia or giant cell tumor.2.Pathologic fracture through this lesion in the intertrochanteric region.