Apocrine nevus
Medical condition
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Apocrine nevi manifests as a persistent pedunculated or nodular skin-coloured axillary lump. Additionally, reports of them occurring on the face, scalp, chest, and inguinal area have been made. The majority of the time, apocrine nevi are asymptomatic, although some individuals describe minor pain, baldness, or in rare cases, leakage.
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Causes
Apocrine nevi may be congenital. There have been reported associations with neurofibromatosis, epilepsy, and localized dermal hypoplasia, but these may be coincidental.
Diagnosis
According to histopathology, apocrine nevi are made up of several mature apocrine sweat glands grouped in lobules that invade the dermis and/or hypodermis and cause normal skin structures to be displaced. There may be some cystic dilatation of the lumina in these glands.