title: Galactocele in a Prepubertal Girl.
abstract: BACKGROUND
  Galactoceles have been previously described as an unusual cause of benign breast enlargement in male infants and children.
  
  
  METHODS
  A 3-year-old prepubertal girl presented with a right-sided breast mass and was found to have a 4.4-cm hypoechoic cyst on ultrasound imaging with otherwise normal endocrine studies including prolactin levels. She underwent cyst aspiration which revealed milky fluid. Fat globules were identified with microscopic examination, confirming the diagnosis of a galactocele. Aspiration resolved the mass.
  
  
  CONCLUSIONS
  The etiology of galactoceles in nonlactating women is poorly understood. Traditionally, treatment of these benign cysts in male children has been surgical excision. In prepubertal girls, conservative management by surveillance or needle aspiration is warranted to prevent damage to developing breast tissue.
authors.affiliation: Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan. Electronic address: veronica.alaniz@ucdenver.edu.
authors.forename: Veronica I
authors.initials: VI
authors.lastname: Alaniz
authors.affiliation: Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
authors.forename: Myrlene
authors.initials: M
authors.lastname: Jeudy
authors.affiliation: Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
authors.forename: Mark
authors.initials: M
authors.lastname: Pearlman
authors.affiliation: Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
authors.forename: Elisabeth H
authors.initials: EH
authors.lastname: Quint
mesh_terms: D001940:Breast / Q000000981:diagnostic imaging / Q000473:pathology*; D047688:Breast Cyst / Q000175:diagnosis*; D002675:Child, Preschool; D003560:Cysts / Q000473:pathology; D005260:Female; D006801:Humans
keywords: Breast cyst; Breast imaging; Breast mass; Galactocele; Pediatric