title: Human papillomavirus-associated penile sarcomatoid carcinoma.
abstract: Sarcomatoid carcinomas are rare tumors predominantly composed of spindle cells. This report describes two cases of penile sarcomatoid carcinoma with similar clinicopathological findings. Distinctive features of these tumors were the focal immunostaining that showed the sarcoma-like cells with keratin, smooth muscle actin and p16, and the absence of immunostaining of these cells with p53, S100 protein and desmin. Polymerase chain reaction (PCR) using the GP5+/GP6+ set of primers was positive in both cases. The sequences of the amplified products showed that the implicated genotypes were Human papillomavirus (HPV) 16 and HPV18. To the best of our knowledge, there has been no report in the English literature of HPV-associated penile sarcomatoid carcinoma. These cases might represent an unusual presentation of dedifferentiated carcinoma in which HPV could be shown by a sensitive technique of PCR.
authors.affiliation: Department of Pathology, Hospital General Universitario de Albacete and Universidad de Castilla la Mancha, Spain. epoblet@sescam.jccm.es
authors.forename: Enrique
authors.initials: E
authors.lastname: Poblet
authors.forename: Alejandro
authors.initials: A
authors.lastname: Pascual
authors.forename: Jose M
authors.initials: JM
authors.lastname: Godínez
authors.forename: Macarena
authors.initials: M
authors.lastname: Pariente-Martín
authors.forename: Eduardo
authors.initials: E
authors.lastname: Escario
authors.forename: Dolores C
authors.initials: DC
authors.lastname: García-Olmo
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D052685:Alphapapillomavirus / Q000235:genetics / Q000302:isolation & purification* / Q000472:pathogenicity; D002296:Carcinosarcoma / Q000556:secondary / Q000601:surgery / Q000821:virology*; D004273:DNA, Neoplasm / Q000032:analysis; D004279:DNA, Viral / Q000032:analysis; D017809:Fatal Outcome; D019085:Fluorescent Antibody Technique, Direct; D052162:Human papillomavirus 16 / Q000235:genetics / Q000302:isolation & purification; D052161:Human papillomavirus 18 / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D017403:In Situ Hybridization; D008297:Male; D030361:Papillomavirus Infections / Q000150:complications* / Q000473:pathology; D010412:Penile Neoplasms / Q000473:pathology / Q000601:surgery / Q000821:virology*; D017422:Sequence Analysis, DNA
chemical_list: D004273:DNA, Neoplasm; D004279:DNA, Viral