Keratosis, inverted follicular - Altmeyers Encyclopedia

Synonym(s)

Acrotrichoma; Inverted follicular keratosis; Keratosis follicularis inversa; porome folliculaire

History
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Mehregan, 1964

Definition
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Benign tumours with basaloid cells, prickle cells and typical squamous eddies that protrude from the follicular ostia into the corium in the shape of fingers. Some authors consider the clinical picture as activated Verruca seborrhoica.

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Dermatology

Basal cell carcinoma nodular:slowly growing, smooth surface, somewhat reddish, symptomless, firm ...

Basal cell carcinoma (overview)

Heterogeneous group of fibroepithelial malignant tumors of the skin, which grow locally infiltrating and de...

Manifestation
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Occurring in 2/3 of cases in men of advanced age.

Localization
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Especially face.

Differential diagnosis
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Verrucae vulgar; basal cell carcinoma; verruca seborrhoica; intradermal nevus; cornu cutaneum.

Therapy
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Excision if necessary.

Literature
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Mehregan AH (1964) Inverted follicular keratosis. Arch Dermatol. 89: 229-235
Roth LM (2000) Inverted follicular keratosis of the vulvar skin: a lesion that can be confused with squamous cell carcinoma. Int J Gynecol Catholic 19: 369-373