Derm Dx: A hard, fixed nodule with a bluish tint on the leg

A 33-year-old woman presents with a hard, fixed nodule of the left lower leg. She states that it developed approximately 2 years ago after she fell and hit her leg on a table. She is otherwise healthy and does not take any medications. On examination, a firm 1-cm nodule of the left lower leg is noted. The nodule is non-tender ...