A rare cutaneous tumor of apocrine or eccrine SWEAT GLAND origin. It is most commonly found on the extremities and is usually benign. It appears as a solitary nodule or cyst and may be solid or produce a watery discharge. It is related to POROMA except in acrospiroma it does not involve the epidermis. There is no indication that heredity or external agents cause these tumors.

Synonyms: Cystic Hidradenoma, Nodular Hidradrenomas, Hidradenomas, Acrospiroma, Hidradenoma, Cystic, Eccrine Spiradenomas, Clear-Cell Hidradrenomas, Solid Cystic Hidradenoma, Eccrine Acrospiromas, Spiradenomas, Eccrine, Solid-Cystic Hidradenomas, Clear-Cell Hidradrenoma, Hidradrenomas, Nodular, Spiradenoma, Eccrine Acrospiroma, Cystic Hidradenomas, Spiradenomas, Acrospiromas, Spiradenoma, Eccrine, Hidradrenoma, Nodular, Clear Cell Hidradrenoma, Eccrine Spiradenoma, Solid-Cystic Hidradenoma, Nodular Hidradrenoma, Acrospiroma, Eccrine, Hidradrenoma, Clear-Cell, Hidradenoma, Solid-Cystic, Hidradenoma