The patient was given a diagnosis of chondrodermatitis nodularis helicis (CNH), an inflammation of the cartilage and overlying skin causing a painful nodule of the helix. These lesions typically have a more prominent nodular component and a central ulceration or firm scale. They are thought to be due to chronic pressure on the ear.
There is a slight male predominance of CNH and onset is usually gradual. Patients often experience pain when sleeping on the affected side. The tenderness usually can be reproduced clinically by pressing on the lesion. The ears also are a high-risk area for actinic keratoses (AK) and nonmelanoma skin cancer (NMSC); if there is doubt about the diagnosis, a biopsy may be warranted to rule out AK or NMSC. In this patient, a shave biopsy was performed.
Various treatment regimens are available for CNH. The least invasive treatment approach is to use a “cut out” foam or a special donut-shaped pillow to protect the area from further pressure. By protecting from pressure and irritation, the lesion resolves in 57% to 92% of cases in clinical studies. Intralesional injection with 0.2 mL of 10 mg/mL triamcinolone acetonide is a simple in-office procedure that frequently helps the pain and may be curative; although, repeat injections may be necessary. Excision of the overlying skin and the affected cartilage is a more aggressive treatment with high success rates. More recently, treatment with topical nitroglycerin patches or photodynamic therapy have been described in small trials.
After confirming by a shave biopsy that the lesion was not cancerous, the patient returned for an elliptical excision of the lesion. A dermal curette was used to remove the rough abnormal inflammation of the underlying cartilage, and the elliptical wound was sutured with a linear closure.
Photo and text courtesy of Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque.