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Folliculosebaceous cystic hamartoma of the external auditory canal in an adult

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February 18, 2012
by Fabiana Pirani Carneiro, MD, Leonora Maciel de Souza Vianna, MD, Aline Marques dos Santos, MD, Igor Teixeira Raymundo, MD, and Ana Emília Borges de Azevedo, MD


Folliculosebaceous cystic hamartoma (FSCH) is a cutaneous hamartoma of pilosebaceous origin that usually occurs on the face. We present what we believe is only the second reported case of FSCH of the external auditory canal, and the first in an adult. The patient was a 59-year-old woman who presented with a 4-year history of a firm nodule on the left external auditory canal that had caused hearing loss, pruritus, and pain. The lesion was excised, and histopathologic examination identified infundibular cysts, hyperplasia of the sebaceous lobules, and a large amount of mucin, features that are consistent with FSCH. One year postoperatively, the patient was asymptomatic, and no evidence of recurrence was noted.

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