The nurse is performing an assessment on a 65-year-old man. He reports a crusty nodule behind the pinna. It intermittently bleeds and has not healed over the past 6 months. On physical assessment, the nurse finds an ulcerated crusted nodule with an indurated base. Based on these findings, what does the nurse suspect?

A) Most likely a keloid
B) Probably a benign sebaceous cyst
C) Could be a potential carcinoma, and the patient should be referred for a biopsy
D) A tophus, which is common in the older adult and is a sign of gout

An ulcerated crusted nodule with an indurated base that fails to heal is characteristic of a carcinoma. These lesions fail to heal and intermittently bleed. Individuals with such symptoms should be referred for a biopsy. The other responses are not correct. A keloid is an overgrowth of scar tissue which in the ear is common at lobule at the site of a pierced ear. A sebaceous cyst is a nodule filled with waxy sebaceous material, is painful if it becomes infected, and is often multiple of them. A tophus is a hard uric acid deposit under the skin. The ulcerated crusted nodule with an indurated base that fails to heal that this patient has is characteristic of a carcinoma.