Eccrine porocarcinoma of the external auditory canal: A case report

Abstract

This study aims to present a case report of an aggressive eccrine porocarcinoma of the ear, focusing on the diagnostic approach and treatment protocol. A 61-year-old woman presented with a mass in the left ear canal. The patient underwent tumor removal followed by adjuvant concurrent chemoradiation therapy. The main outcome measures include the extent of tumor involvement, histopathological confirmation of eccrine porocarcinoma, and postoperative results at the 6-month follow-up. The mass involved the left external auditory canal, middle ear cavity, mastoid cavity, and the deep lobe of the left parotid gland. The biopsy confirmed the diagnosis of eccrine porocarcinoma. The patient showed favorable results at the 6-month postoperative follow-up. This case report highlights the importance of early surgical excision in combination with adjuvant chemoradiation therapy as the recommended treatment approach for aggressive eccrine porocarcinoma of the ear. The findings emphasize the need for a standardized diagnostic and treatment protocol for this rare malignancy.