What is a Dilated Pore of Winer?
Discussion
Dilated pore of Winer (DPW) was first described by Louis H. Winer in 1954 in his article entitled “The Dilated Pore, A Trichepithelioma.”
It is a benign follicular tumor with particular histopathological characteristics. Its’ differential diagnosis includes:
Comedomal acne
Pilar sheath acanthoma – seen as a solitary papule with keratin plug on the central area of face
Nevus comedomes – multiple dark comedomes with central dilated dark openings
Epidermal inclusion cysts – more nodular with or without keratin plug where the keratin material has a foul odor
Tricofolliculoma
Basal cell carcinoma – occasionally seen on biopsy
Learning Point
DP presents as a single, enlarged pore which can be relatively small to several millimeters across. The pore is often occluded with a keratin plug that if expressed has white, soft creamy, keratin material behind it. The end of the keratin plug can be quite dark and the plug can be quite hard because of inspissation. It can also present as a papule with a follicular pore. They generally occur on the face, head and neck, but can also occur on the trunk. They are more common in males than females and in middle-older aged adults. However they can occur in older adolescents and young adults.
DPs are asymptomatic (but can be irritated by manipulation) and usually have been present for a long time before consulting a physician. The history may include that the keratin plug and material has been e...
Source: PediatricEducation.org - Category: Pediatrics Authors: Pediatric Education Tags: Uncategorized Source Type: news
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