Reason: knee mass/pain History: pain The medial and lateral meniscus appear intact. No full-thickness or near full-thickness articular cartilage defects are identified. No bone marrow signal abnormality is seen. The cruciate and collateral ligaments appear intact. The extensor mechanism appears intact. There is a small amount of fluid within the joint without evidence of a large effusion. There is a skin marker along the anteromedial aspect of the knee presumably corresponding to the patient's palpable area of concern. There is a 8.1 x 2.6 x 2.1 cm heterogenous mass/collection along the anteromedial aspect of the right knee situated along and abutting the medial retinacular structures which demonstrates irregular peripheral enhancement on post contrast sequences. There is subcutaneous edema in the surrounding area.
Enhancing heterogeneous mass/collection within the subcutaneous tissue along the anteromedial aspect of the medial retinacular structures is nonspecific and may be infectious, inflammatory, or neoplastic in etiology. 