Nevus comedonicus.
The nevus comedonicus (NC) is an uncommon variant of adnexal hamartoma which appears clinically as linear groups of open comedones. Its name may be a misnomer since, according to some, true comedones are not present. NC usually occurs by itself but may be linked with a variety of systemic findings such as skeletal or ocular anomalies. Although the nevus comedonicus is viewed by many as a hamartoma arising from a defective mesoderm, others consider this lesion to be an epidermal nevus involving the hair follicle or an appendageal nevus of sweat ducts.
Lefkowitz
A
A
Dermatology, New Jersey Medical School, Newark, NJ 07103-2714, USA.
Schwartz
R A
RA
Lambert
W C
WC
D003937:Diagnosis, Differential; D006222:Hamartoma / Q000473:pathology; D006801:Humans; D009506:Nevus / Q000473:pathology*; D012867:Skin / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*