Extensive heterogeneous intramedullary marrow signal affecting the distal two thirds of the right femoral shaft. The cortex is expanded and breached in several places.
Large associated soft tissue extension 8 cm in transverse dimensions and 29 cm in longitudinal dimensions. The abnormality reaches to within 2.5 cm of the greater trochanter. Small 1 cm focal high signal just below the intertrochanteric line, maybe a skip lesion.
The hip joint is not involved.
The soft tissue component abuts the neurovascular bundle in the thigh at its posterior aspect, but no definite encasement.