title: Unusual histopathological diagnosis of prostatic blue nevus: a case report.
abstract: BACKGROUND
  Prostatic blue nevus was first described as a benign lesion of uncertain and controversial histogenesis by Nogogosyan in 1963. Currently, 30 cases have been reported in the world literature.
  
  
  METHODS
  A 63-year-old Hispanic man presented with prostatism of several months' evolution. Histopathological examination revealed a blue nevus associated with nodular hyperplasia and acute inflammation.
  
  
  CONCLUSIONS
  Prostatic blue nevus is a rare and unusual, histologically benign prostatic lesion with limited clinical significance and a favorable prognosis.
authors.affiliation: Servicio de Patología, Hospital Metropolitano, Av, Mariana de Jesus s/n y Nicolás Arteta, Quito, Ecuador. nmontalvof@gmail.com.
authors.forename: Nelson
authors.initials: N
authors.lastname: Montalvo
authors.forename: Ligia
authors.initials: L
authors.lastname: Redrobán