title: [Hydrocele and cholesterol granuloma of the tunica vaginalis simulating a tumor in echography].
abstract: OBJECTIVE
  A case of cholesterol granuloma of tunica vaginalis, with an equivocal ultrasound image but typical histopathological picture, is described.
  
  
  METHODS
  A 33-year-old man complained of a painless scrotal mass of 17 years duration. The mass was 10 cm in diameter, could not be transilluminated and appeared as paratesticular and solid on ultrasound, suggesting a tumor. At operation an old hydrocele with cholesterol crystals and cholesterol granuloma of tunica vaginalis was found. A partial resection of tunica vaginalis was performed, sparing the testis.
  
  
  CONCLUSIONS
  Cholesterol granuloma is a rare inflammatory reaction of tunica vaginalis, that may simulate an intrascrotal tumor on physical examination, on ultrasound and at operation.
authors.affiliation: Seccione de Urología, Hospital Monte Naranco, Oviedo, Asturias.
authors.forename: L A
authors.initials: LA
authors.lastname: Fariña Pérez
authors.forename: P
authors.initials: P
authors.lastname: Menéndez
authors.forename: V
authors.initials: V
authors.lastname: Macho
mesh_terms: D000328:Adult; D002784:Cholesterol; D003937:Diagnosis, Differential; D015745:Granuloma, Foreign-Body / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D012611:Scrotum; D006848:Testicular Hydrocele / Q000000981:diagnostic imaging*; D013736:Testicular Neoplasms / Q000000981:diagnostic imaging; D014463:Ultrasonography
chemical_list: D002784:Cholesterol
vernacular_title: Hidrocele y granuloma por colesterol de la túnica vaginal simulando un tumor en la ecografía.