Home   Chapter Home   Jobs   Conferences   Fellowships   Books



Advertisement

Skin - Nonmelanocytic tumors

Adnexal tumors-hair follicles

Inverted follicular keratosis


Reviewer: Christopher Hale, M.D. (see Reviewers page)
Revised: 5 July 2012, last major update June 2012
Copyright: (c) 2001-2012, PathologyOutlines.com, Inc.

General
=========================================================================

● Eyelid or face of elderly
● Etiology disputed: may be irritated seborrheic keratosis, irritated verruca vulgaris or keratotic lesion of infundibular region of hair follicle

Case reports
=========================================================================

● 64 year old man with pigmented lesion on nostril (Dermatol Pract Concept 2011;1:11)

Clinical images
=========================================================================



Exophytic, corneal brown lesion in left nostril

Gross description
=========================================================================

● Single nodule or papule projecting above skin surface

Micro description
=========================================================================

● Well circumscribed with squamous eddies containing an inverted papillomatous and acanthotic component
● No inflammation

Micro images
=========================================================================


   
Various images

Differential diagnosis
=========================================================================

● Tricholemmoma
● Seborrheic keratosis

End of Skin - Nonmelanocytic tumors > Adnexal tumors-hair follicles > Inverted follicular keratosis


This information is intended for physicians and related personnel, who understand that medical information is often imperfect, and must be interpreted in the context of a patient's clinical data using reasonable medical judgment. This website should not be used as a substitute for the advice of a licensed physician.

All information on this website is protected by copyright of PathologyOutlines.com, Inc. Information from third parties may also be protected by copyright. Please contact us at copyrightPathOut@gmail.com with any questions (click here for other contact information).