title: Eccrine hidrocystoma of the external ear canal: a case report.
abstract: Eccrine hidrocystomas are essentially sweat gland retention cysts located in the dermis. Clinically, an eccrine hidrocystoma presents as a small, translucent cystic swelling (often having a bluish hue), and measuring from 1 to 3 mm in diameter. The clinical and histopathological features of an eccrine hidrocystoma of the external auditory canal are presented, and the morphologic differences between an eccrine and an apocrine hidrocystoma are discussed.
mesh_terms: D004424:Ear Canal / Q000473:pathology; D004428:Ear Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D013544:Sweat Gland Neoplasms / Q000473:pathology*