title: Cutaneous paraneoplasia.
abstract: Paraneoplasias are frequently the first sign of a subjacent malignant tumor. Although relatively rare, they need to be recognized by dermatologists to make an early diagnosis and improve the prognosis related especially to the neoplasia. This contribution presents the morphologic aspects and the differential diagnosis of the main paraneoplasias, which include acanthosis nigricans, tripe palms, Leser-Trélat sign, acquired ichthyosis, acquired hypertrichosis lanuginosa, pityriasis rotunda, erythema gyratum repens, palmo-plantar keratoderma, Bazex syndrome, and dermatomyositis, hoping to contribute to the familiarity of dermatologists with the identification and early diagnosis of this group.
authors.affiliation: Sector of Dermatology and Post Graduation Course of Dermatology, University Hospital Clementino Fraga Filho andSchool of Medicine, Federal University of Rio de Janeiro, 22280-020 Rio de Janeiro, Brazil. ramos.e.silva@dermato.med.br
authors.forename: Marcia
authors.initials: M
authors.lastname: Ramos-E-Silva
authors.forename: Joana Castro
authors.initials: JC
authors.lastname: Carvalho
authors.forename: Sueli Coelho
authors.initials: SC
authors.lastname: Carneiro
mesh_terms: D000052:Acanthosis Nigricans / Q000175:diagnosis / Q000473:pathology; D000328:Adult; D000368:Aged; D002280:Basal Cell Carcinoma / Q000175:diagnosis / Q000473:pathology; D003882:Dermatomyositis / Q000175:diagnosis / Q000473:pathology; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D006983:Hypertrichosis / Q000175:diagnosis / Q000473:pathology; D007039:Hypotrichosis / Q000175:diagnosis / Q000473:pathology; D007057:Ichthyosis / Q000175:diagnosis / Q000473:pathology; D007645:Keratoderma, Palmoplantar / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010214:Papillon-Lefevre Disease / Q000175:diagnosis / Q000473:pathology; D010257:Paraneoplastic Syndromes / Q000175:diagnosis* / Q000473:pathology; D010915:Pityriasis / Q000175:diagnosis / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology; D055815:Young Adult