Pathology of Dilated Pore of Winer

Answer -Dilated Pore of Winer

Dilated pore of Winer is relatively common but poorly recognized adnexal lesion. The Winer dilated pore.Med Cutan Ibero Lat Am. 1989;17 (1):45-7.

The lesion is commonly noted in elderly patients.

Clinically the lesion looks like a giant comedo.

These are usually located in the head, neck and upper trunk.

Microscopic features:

- Lesion may extend to mid or lower dermis ;

- Funnel shaped structure lined by infundibular or isthmic-type epithelium,

- It is filled with laminated keratin, connected to the surface ;

- Thickening of epithelium including finger-like projection into the dermis ;

- Epidermoid keratinization.

Differential diagnosis: Pilar sheath acanthoma

Hair cortex comedo: a series of 34 cases.