52-year-old female. Subcutaneous nodule. Evaluate for soft tissue mass and extension of mass. The leg was imaged from the tibial articulation in the knee to the ankle joint. Three markers were placed around the patient's palpable abnormality in the posterior lateral mid leg. This corresponded to a T1 hypointense and STIR hyperintense subcutaneous nodule that measures 1.4 x 2.6 cm in maximal transaxial dimensions and 1.9 cm in the CC dimension (series 6, image 22; series 6, image 22). Its enhancement cannot be assessed on post-contrast sequences due to extensive artifact at the edge of the coil. A second subcutaneous nodule with similar signal intensity and that diffusely enhances is seen in the medial anterior upper leg. It has maximal transaxial dimensions of 1 x 2.2 cm and a CC dimension of 1.8 cm (series 13, image 32; series 15, image 12). Neither of these nodules extend to the underlying musculature. Diffuse mild atrophy of the musculature of the leg. Varicose veins are noted mostly in the medial aspect of the leg. Mild subcutaneous edema greatest in the anterior and lower lateral aspect of the leg. Bone marrow signal intensity is normal. Incompletely imaging of the knee shows a small joint effusion with synovial thickening and enhancement, suggestive of synovitis. A small Baker's cyst is noted.
Two subcutaneous nodules in the leg with nonspecific signal characteristics; both benign and malignant etiologies are included in the differential.