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 Printable version |
Isolated palmoplantar hyperkeratosis revealing keratosis lichenoides chronica |
European Journal of Dermatology. Volume 9, Number 6, 497-9, September 1999, Votre diagnostic !
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 Free Article
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Author(s) : N. Thieulent, P. Grézard, F. Wolf, B. Balme, H. Perrot |
Summary : A 50-year-old man without previous medical history had an isolated pruriginous palmoplantar hyperkeratosis, evolving over 4 years. Clinically, this hyperkeratosis was symmetric and well delineated. The borders were hyperkeratotic and lichenoid hyperkeratotic papules were seen on the dorsal area of the palms and soles. By coalescence these lichenoid hyperkeratotic papules sometimes had a reticulated pattern and formed yellow-grey plaques on the palmoplantar area (Figs. 1 to 3). Nail abnormalities were observed as longitudinal ridges with red discoloration and slight distal onycholysis (Fig. 4). No consistent associated changes of the hair, teeth or eyes and no mucous membrane involvement were noted. A cutaneous biopsy of a lichenoid hyperkeratotic papule was performed and showed hyperkeratosis with focal parakeratosis, acanthosis as well as atrophy of the epidermis. A band-like dense lymphohistiocytic infiltrate in the upper dermis with focal degeneration of the basal cell layer was observed (Fig. 5). |
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