Two cases of trichilemmal-like horn.
We report two cases of cutaneous horn: one on the palm and one on the thumb. Microscopic examination of the lesion revealed trichilemmal-like keratinization that was unrelated to hair follicles. Each of these lesions most probably developed within a preexisting verruca vulgaris.
D000368:Aged; D002145:Callosities / Q000473:pathology*; D006197:Hair / Q000473:pathology; D006229:Hand Dermatoses / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013933:Thumb