History of peripheral T-cell lymphoma. Left ring finger swelling. There is ill-defined soft tissue lesion surrounding the middle phalanx of the fourth digit extending to the PIP joint with intermediate T1 and increased T2 signal with enhancement on postcontrast imaging. There is destruction of the underlying middle phalanx with infiltration of enhancing soft tissue. Bone marrow signal adjacent to the areas of destruction is within normal limits. No additional areas of abnormal enhancement are noted in the left hand.
Infiltrative, enhancing soft tissue lesion encasing the middle phalanx of the left ring finger with destruction of the underlying osseous structures is most consistent with a soft tissue metastasis given history of malignancy. Infection is still a possibility but considered less likely.