Reason: Left proximal thigh leiomyosarcoma, evaluate for size prior to surgical excision History: above A marker was placed along the medial aspect of the proximal to mid thigh. Deep to the marker, there is a mass within the subcutaneous fat superficial to the gracilis muscle, measuring approximately 3.5 cm in its greatest transverse dimension and just under 4 cm in the craniocaudal dimension. It is isointense to skeletal muscle on T1-weighted images, heterogeneous on T2 weighted images with foci of high, intermediate and low signal intensity, and shows heterogeneous enhancement following contrast administration. The mass has slightly irregular margins and extends from the skin through the peripheral deep fascia. It results in mild mass effect on the gracilis, although there is a very thin fat plane which appears to separate the majority of the mass from the gracilis on the axial T1-weighted images. We see no frank invasion of the muscle itself. The musculature of the posterior and medial compartments appears slightly atrophic. We see no abnormal enhancement of the musculature of the thigh. The bone marrow signal intensity of the left femur appears normal although the distal end of the femur is not included on the field-of-view of this study.
Medial thigh leiomyosarcoma as described above.