_:vb50936821 "url:http://en.wikipedia.org/wiki/Palmoplantar_keratoderma"^^ . _:vb50936821 . _:vb50936821 "A palmoplantar keratosis characterized by a well-demarcated, symmetric keratoderma located_in palms and located_in soles."^^ . _:vb50936821 . _:vb50936821 . _:vb50936821 . _:vb50936821 .