Female, 77 years old. Left proximal thigh mass, evaluate for interval change. A lobulated mass of predominantly fluid signal intensity along the anterior aspect of the thigh within the adductor brevis muscle measures approximately 4.4 x 4.8 x 5.5 cm (series 701, image 17; series 601, image 20), previously 3.9 x 4.0 x 5.6 cm. There is a thin rim of peripheral enhancement associated and several thin nonenhancing septations. A small benign-appearing inguinal lymph node along the anterolateral margin of the mass measures 5 mm in short axis, unchanged. There are no significant inflammatory changes in the surrounding soft tissues. No other lesions are identified within the soft tissues. The underlying osseous structures appear unremarkable, with normal cortical thickness and marrow signal. The imaged muscles are otherwise unremarkable.
A 5 cm mass along the medial aspect of the left anterior thigh is stable to slightly increased in size compared to the prior study and compatible with myxoma as confirmed on prior biopsy.