title: Pseudoaneurysm of the breast.
abstract: BACKGROUND
  Pseudoaneurysm of the breast is a very rare complication, which may occur after breast biopsy with a large core needle. We report a case of pseudoaneurysm of the breast that occurred after biopsy of a breast mass.
  
  
  METHODS
  The patient underwent core biopsy of a breast mass, progressing with extensive hematoma after the initial firing of the biopsy gun. Regression of the hematoma occurred but a nodular area persisted. A pseudoaneurysm was detected on ultrasonography and magnetic resonance imaging.
  
  
  CONCLUSIONS
  An extensive breast hematoma following core needle biopsy usually regresses completely within a few weeks. The persistence of a vascularized lesion on ultrasound should draw attention to the diagnosis of pseudoaneurysm. This condition may be managed by endovascular procedure or surgical resection of the lesion.
authors.affiliation: Medical Department, UNINOVAFAPI University Centre, Piauí, Brasil.
authors.forename: Ariosto Rodrigues Ribeiro
authors.initials: AR
authors.lastname: Filho
authors.affiliation: Medical Department, UNINOVAFAPI University Centre, Piauí, Brasil.
authors.forename: Aline Fortes
authors.initials: AF
authors.lastname: Machado
authors.affiliation: UFPI (Edifício Shecap), CEP 640001-160 Teresina, Piauí, Brasil.
authors.forename: Sabas Carlos
authors.initials: SC
authors.lastname: Vieira
authors.affiliation: Clinica Med Imagem, CEP 64049-650 Teresina, Piauí, Brasil.
authors.forename: Aldecy Ribeiro Gonçalves
authors.initials: AR
authors.lastname: do Nascimento Teixeira Dantas
mesh_terms: D017541:Aneurysm, False / Q000175:diagnosis / Q000209:etiology*; D062005:Biopsy, Large-Core Needle / Q000009:adverse effects*; D001940:Breast / Q000473:pathology*; D005260:Female; D006406:Hematoma / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged
keywords: Breast; pseudoaneurysm