title: Primary psoas abscess complicating a normal vaginal delivery.
abstract: BACKGROUND
  Psoas abscess is a rare and potentially dangerous complication of normal delivery.
  
  
  METHODS
  We describe a case of primary psoas abscess after normal vaginal delivery. A young woman presented with fever, left back pain, left lower abdominal pain, and hip pain starting on postpartum day 2. Computed tomography demonstrated a large retroperitoneal collection. Aspiration drainage of the abscess under computed tomography guidance isolated Streptococcus viridans, which responded to antibiotic therapy and percutaneous drainage with complete resolution.
  
  
  CONCLUSIONS
  A high index of suspicion is necessary for diagnosis of psoas abscess, which should be considered in postpartum patients with pyrexia, back and hip pain, and a normal neurologic examination. Computed tomography is effective for diagnosis and allows percutaneous drainage of the abscess.
authors.affiliation: Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut, USA.
authors.forename: Shohreh
authors.initials: S
authors.lastname: Shahabi
authors.forename: Joshua P
authors.initials: JP
authors.lastname: Klein
authors.forename: Paolo F
authors.initials: PF
authors.lastname: Rinaudo
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D017699:Pelvic Pain / Q000209:etiology; D049590:Postpartum Period; D016659:Psoas Abscess / Q000175:diagnosis* / Q000628:therapy; D013290:Streptococcal Infections / Q000175:diagnosis* / Q000628:therapy