title: [Intraductal metachronic papilloma: Clinical case].
abstract: BACKGROUND
  The association of gynecomastia and bloody nipple discharge (thelorragia) leads us to the diagnosis of intraductal papilloma. This is a very rare benign tumor in children.
  
  
  METHODS
  A 2 year old male child was referred due to gynecomastia and bloody nipple discharge of the left breast. A mastectomy was performed. At the age of 4 he returned with identical symptoms but in the right breast. A right mastectomy was also required. An excellent clinical outcome was present in the follow up. The pathology reported intraductal papilloma with no evidence of malignancy or atypia.
  
  
  CONCLUSIONS
  The intraductal papilloma rarely affects children, there are 15 reported cases. Ultrasound is the most useful diagnostic method. In male patients, mastectomy is recommended to ensure definitive diagnosis and treatment.
authors.affiliation: Servicio de Cirugía Pediátrica, Sanatorio Allende.
authors.forename: Celeste C Patiño
authors.initials: CC
authors.lastname: González
authors.affiliation: Servicio de Cirugía Pediátrica, Sanatorio Allende.
authors.forename: Enrique J
authors.initials: EJ
authors.lastname: RomeroManteola
mesh_terms: D018567:Breast Neoplasms, Male / Q000175:diagnosis* / Q000601:surgery; D002675:Child, Preschool; D006177:Gynecomastia / Q000473:pathology; D006801:Humans; D008297:Male; D008408:Mastectomy; D009558:Nipples / Q000473:pathology; D018300:Papilloma, Intraductal / Q000175:diagnosis* / Q000601:surgery