Folliculoma Clinical Presentation
- Author: Craig G Burkhart, MD, MPH; Chief Editor: Dirk M Elston, MD more...
Patients with this disorder note a small nodule on their face, or possibly scalp, ears, or neck. Although there is one report of multiple lesions, folliculomas normally present as solitary nodules. Lesions are asymptomatic and slow growing, with a diameter of 0.2-1 cm. Lesions have a central punctum through which the patient would note the presence of cottony hair extruding from the bump.
Folliculomas are solitary tumors, most commonly found on the face or occasionally the scalp. The lesion is a firm, slightly elevated, pearly tumor with a central crater or punctum containing keratinous material or a wisp of wool-like or cottony hairs, usually white, protruding from it. If hairs protrude from the crater, the diagnosis is strongly suspected, as clinically, this is a highly diagnostic feature.
Folliculomas have been identified in the vulva, albeit rarely.
Also rarely, this condition has been associated with focal acantholytic dyskeratosis.
Folliculomas are caused by a maldevelopment of the hair follicle unit.
Lesions are organoid, or hamartomatous, adnexal tumors of hair follicle origin.
They undergo anatomical changes corresponding to the regressing normal hair follicle in its various cycles.
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