Can You Identify This Tender Nodule on a Woman's External Ear?

摘要

A 60-year-old woman presented with a nodule on her right antihelix. The nodule had appeared a year ago and was tender to the extent that it would awake her from sleep when she turned on it. Her past health was unremarkable. There was no history of trauma. She had been sleeping on her right side until the appearance of the painful nodule, when she began to favor sleeping on her left side.