Multiple Long-Standing Papules and Nodules on the Left Lower Leg

Abstract

A woman in her 60s with long-standing thickening and induration of the legs presented with 1 week of left leg pain. Physical examination results revealed multiple firm skin-colored papules and nodules coalescing to form a large plaque on the anterior aspect of the left lower leg, whereas the right lower leg had diffuse induration and hyperpigmentation. What is your diagnosis?