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Posteroanterior radiograph of the left hand obtained May 12, 2017 (A), demonstrates periarticular osteopenia and a marginal erosion (arrow) at the base of the fifth metacarpal. Repeat posteroanterior radiograph of the left hand obtained August 9, 2017 (B), demonstrates no interval change of the findings. Posteroanterior radiograph of the right hand obtained August 9, 2017 (C), demonstrates symmetrical findings, including apparent erosion (arrow) at the fifth metacarpal.
