Female, 52 years old. Palpable nodule around left 2nd PIP There is an area of abnormal signal within the volar and ulnar subcutaneous soft tissues of the second finger adjacent to the PIP joint. This area measures approximately 5 x 3 x 8 m (series 1401, image 38; series 1501, image 30) with increased signal on T2-weighted images, decreased signal on T1-weighted images, and heterogeneous enhancement. No other focal abnormalities are noted in the soft tissues of the finger. The underlying osseous structures, tendons, and ligaments appear normal.
An enhancing soft tissue mass within the subcutaneous tissues of the second finger near the PIP joint is nonspecific, but may reflect enhancing synovitis. However, a small soft tissue tumor cannot be excluded. Correlation with plain radiographs may be useful for further evaluation as clinically warranted.