[Tubulo-papillary apocrine adenoma
in association with syringocystadenoma papilliferum].
The clinical differential diagnosis included supernumerary nipple, eccrine poroma, clear cell acanthoma, papillary eccrine adenoma, tubular apocrine adenoma
, keloid, melanoma, and nonmelanoma skin cancer.
Dermatologic entities with similarities in histologic appearance include hidradenoma, apocrine cystadenoma, eccrine acrospiroma, papillary eccrine adenoma, apocrine adenoma
, chondroid syringoma, and tubular apocrine adenoma
[2, 4, 7].
Among benign lesions with apocrine cells are apocrine metaplasia, apocrine adenosis, papillomas, fibroadenomas, and apocrine adenoma
. Among atypical and malignant lesions with apocrine features are atypical apocrine adenosis (AAA), apocrine ductal carcinoma in situ (DCIS), and invasive carcinoma with apocrine features.
Tubular apocrine adenoma
and papillary eccrine adenoma.
Ceruminous adenoma, also called ceruminoma, ceruminal adenorna, apocrine adenoma
, or even cylindroma in the past (the latter three terms are discouraged) is a benign glandular neoplasm of ceruminous glands (modified apocrine sweat glands) that arises solely from the external auditory canal.