Left thigh mass Arising from the posteromedial subcutaneous tissue of the left femur is a large predominantly fatty mass measuring approximately 12.8 x 9.2 x 13 cm in the greatest craniocaudal, lateral, and AP dimensions. Cystic foci of high T1 signal is noted within the lipoma which may reflect a small component of hemorrhage and/or necrosis. Thin septations are noted throughout the mass and following contrast administration, there is no thick septal or nodular enhancement identified. No additional lesions are seen. The underlying muscle and bone marrow signal of the thigh is normal.
Large fatty mass arising from the subcutaneous tissues of the left femur demonstrate characteristics most consistent with lipoma. There are no aggressive features and no thick septal or nodular enhancement identified.