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Lipomatous pleomorphic adenoma of the ceruminous gland
Hiroko Kuwabara1, Shin-Ichi Haginomori, Atsuko Takamaki
1Department of Pathology, School of Medicine, Osaka Medical College, Osaka, Japan. pa2020@art.osaka-med.ac.jp
Abstract:
A case of lipomatous pleomorphic adenoma in the ceruminous gland is reported. A 69-year-old Japanese woman presented with a mass in the posterior wall of the cartilaginous external auditory canal. Light microscopic examination revealed a well-circumscribed tumor composed of tubular structures with apocrine secretion and ceroid deposition, extensive mature adipocytes, and spindle-shaped myoepithelial cells in the myxoid and fibrous stroma. This case demonstrates the peculiar location of a lipomatous pleomorphic adenoma in the external auditory canal.
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