Eccrine porocarcinoma of the external ear | Ear, Nose & Throat Journal Skip to content Skip to navigation

Eccrine porocarcinoma of the external ear

| Reprints
August 16, 2011
by Bruce Watkins, MD, Andrew C. Urquhart, MD, and James J. Holt, MD


Eccrine porocarcinoma (EP) is believed to arise from the intraepithelial portion of the eccrine sweat glands. The incidence rate of EP is reported to be 18 per 450,000 biopsies. Most of the diagnosed cases involve the lower extremities; a case of EP involving the ear is rare. We describe the clinical, radiologic, and histopathologic features of EP in an 11-year-old boy.

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