Apocrine Hidrocystoma

Apocrine hidrocystoma is a rare, benign cystic tumor originating from the secretory part of the apocrine sweat glands. The tumor typically presents as a solitary, asymptomatic papule or nodule and is commonly found on the head and neck. Apocrine hidrocystomas usually range from 3 to 15 mm in size and may appear translucent, often exhibiting noted mobility. Occasionally, the benign tumor may present in other areas.  Although apocrine hidrocystoma typically presents as a solitary growth, rare multiple forms can also occur, potentially serving as important markers for certain inherited diseases or ectodermal dysplasia, such as a particular form of Goltz-Gorlin syndrome and Schopf-Schultz-Passarge syndrome. Apocrine hidrocystoma is typically diagnosed through histological examination, allowing clinicians to confirm the diagnosis.