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Dilated pore of Winer
Other Resources UpToDate PubMed

Dilated pore of Winer

Contributors: Mari M. Batta DO, Whitney A. High MD, JD, MEng, Lowell A. Goldsmith MD, MPH
Other Resources UpToDate PubMed

Synopsis

A dilated pore of Winer, or dilated pore, is a benign adnexal tumor with differentiation toward hair structures. It is a common lesion that may be acquired due to inflammatory cystic acne or actinic damage. Clinically, the condition appears as a solitary, enlarged pore filled with keratin. The large comedo is most commonly situated on the head and neck but can also be seen on the trunk of middle-aged adults. Patients will often report expression of white caseous keratin debris from the pore that will refill over several weeks.

Although typically asymptomatic, inflammation or infection may occur with manipulation. While dilated pores are benign, there was report of a basal cell carcinoma arising within a dilated pore, but this was likely coincidental.

Codes

ICD10CM:
L73.9 – Follicular disorder, unspecified

SNOMEDCT:
254692003 – Winer's dilated pore

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Last Updated:10/12/2018
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