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An 84-year-old man with a history of skin cancer of the left auricle that had been treated at an outside institution was noted to have an indurated, fixed nodule over the right mastoid process during a routine dermatologic follow-up. He reported that it had been present for 8 months. His medical history included Paget disease, left auricular squamous cell carcinoma, and coronary artery disease, with a 1-year history of coronary artery bypass grafting. He smoked and drank occasionally.
Hammon RJ, Lin HW, Sadow PM, Lin DT, Rocco JW. Pathology Quiz Case 1. Arch Otolaryngol Head Neck Surg. 2011;137(2):198-202. doi:10.1001/archoto.2010.247-a