Squamous cell carcinoma of the skin: large, painless plaque with a sharply defined proximal border, with extensive horny and crusty deposits; the finding has existed for several years.
Psoriasis of the hands: here partial manifestation in the context of generalized psoriasis. No preexisting conditions. The acral affection led to massive psoriatic onychodystrophies (crumb nails).
Keratosis palmoplantaris circumscripta seu areata: Lateral view: Since birth existing, verrucous, hyperkeratotic plaques on digitus III of the left hand in a 10-year-old female patient.
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