Dilated Pore of Winer Follow-up

  • Author: Alyssa Y Kim, MD; Chief Editor: Dirk M Elston, MD  more...
Updated: Feb 08, 2016


Manipulation of a dilated pore of Winer may lead to infection and scarring.



Incomplete excision results in regeneration of the dilated pore from the residual infundibular lining. Prognosis is excellent with no known report of death. One case of trichoid basal cell carcinoma in a dilated pore has been reported.[11] More commonly, chronic manipulation and expression of the keratotic plug from inside the pore may lead to inflammation and infection of the surrounding tissue.

Contributor Information and Disclosures

Alyssa Y Kim, MD Clinical Associate Professor, Department of Dermatology, Keck School of Medicine of the University of Southern California

Alyssa Y Kim, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, Sigma Xi, American College of Mohs Surgery

Disclosure: Nothing to disclose.

Specialty Editor Board

Michael J Wells, MD, FAAD Associate Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine

Michael J Wells, MD, FAAD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Medical Association, Texas Medical Association

Disclosure: Nothing to disclose.

Jeffrey J Miller, MD Associate Professor of Dermatology, Pennsylvania State University College of Medicine; Staff Dermatologist, Pennsylvania State Milton S Hershey Medical Center

Jeffrey J Miller, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, Society for Investigative Dermatology, Association of Professors of Dermatology, North American Hair Research Society

Disclosure: Nothing to disclose.

Chief Editor

Dirk M Elston, MD Professor and Chairman, Department of Dermatology and Dermatologic Surgery, Medical University of South Carolina College of Medicine

Dirk M Elston, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

Neil Shear, MD Professor and Chief of Dermatology, Professor of Medicine, Pediatrics and Pharmacology, University of Toronto Faculty of Medicine; Head of Dermatology, Sunnybrook Women's College Health Sciences Center and Women's College Hospital, Canada

Neil Shear, MD is a member of the following medical societies: Canadian Medical Association, Ontario Medical Association, Royal College of Physicians and Surgeons of Canada, Canadian Dermatology Association, American Academy of Dermatology, American Society for Clinical Pharmacology and Therapeutics

Disclosure: Nothing to disclose.


Author would like to thank Dr Lawrence Marchtinger for his contribution of the microscopic slides.

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Hematoxylin and eosin stain. Original magnification X40. Courtesy of Lawrence Machtinger, MD.
Image shows an epidermal lining that is atrophic near the ostium but progressively hypertrophic and proliferative, with numerous rete ridges, in the deeper part of the cavity (hematoxylin and eosin, original magnification X100).
The cavity is filled with laminated keratin (hematoxylin and eosin, original magnification X100).
Dilated pore of Winer on forehead.
Dilated pores of Winer on forehead and lateral upper labial region.
Dilated pore of Winer on lateral upper labial region.
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