title: [Vasitis nodosa].
abstract: OBJECTIVE
  To describe a case of vasitis nodosum causing spontaneous recanalization of the vas deferens.
  
  
  METHODS
  Herein we describe a patient who had undergone vasectomy 9 years earlier. A nodule in the vas deferens arising from granulomatous reaction had progressed to vasitis nodosum, causing spontaneous recanalization of the vas deferens.
  
  
  RESULTS
  Vasitis nodosum may be more frequent than it is considered to be although clinical problems rarely arise.
  
  
  CONCLUSIONS
  Confusion may arise in distinguishing the histological features of vasitis nodosum from those of adenocarcinomatous neoplasia. Although rarely, its growth may cause recanalization of the vas deferens in vasectomized patients.
authors.affiliation: Servicio de Urología, Hospital Cruces, Baracaldo, Bilbao, Vizcaya, España.
authors.forename: R
authors.initials: R
authors.lastname: Llarena Ibarguren
authors.forename: F
authors.initials: F
authors.lastname: Vesga Molina
authors.forename: J C
authors.initials: JC
authors.lastname: Marín Lafuente
authors.forename: C
authors.initials: C
authors.lastname: Pertusa Peña
mesh_terms: D000328:Adult; D004542:Ejaculation; D005832:Genital Diseases, Male / Q000209:etiology / Q000473:pathology*; D006099:Granuloma / Q000209:etiology / Q000473:pathology*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000473:pathology*; D011247:Pregnancy; D014649:Vas Deferens / Q000473:pathology*; D014659:Vasectomy