title: Subungual squamous cell carcinoma.
abstract: Although subungual squamous cell carcinoma is rare, it is the most common primary malignant neoplasms in this location. The higher incidence occurs in the fingernails, but involvement of the toenails is also possible. Subungual squamous cell carcinoma often looks like other more common benign lesions, such as fungal infection, onychomycosis, or viral wart. These factors, together with a general lack of awareness of this disease among physicians, often result in delayed diagnosis. Therefore, it is underdiagnosed, with few reports in the literature. The authors present a case of a man with a diagnosis of subungual squamous cell carcinoma in the hallux, without bone involvement, which was submitted to the appropriate surgical treatment.
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Carolina Barbosa de Sousa
authors.initials: CB
authors.lastname: Padilha
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Laila Klotz de Almeida
authors.initials: LK
authors.lastname: Balassiano
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Julyana Calegari
authors.initials: JC
authors.lastname: Pinto
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Flávia Crespo Schueler de
authors.initials: FC
authors.lastname: Souza
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Bernard Kawa
authors.initials: BK
authors.lastname: Kac
authors.affiliation: Policlínica Geral do Rio de Janeiro (PGRJ) - Rio de Janeiro (RJ), Brazil.
authors.forename: Curt Mafra
authors.initials: CM
authors.lastname: Treu
mesh_terms: D000368:Aged; D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D009260:Nail Diseases / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D014034:Toes / Q000473:pathology; D016896:Treatment Outcome