title: Vesicovaginal reflux mimicking obstructive hydrocolpos.
abstract: OBJECTIVE
  The purpose of this study was to describe a series of cases of hydrocolpos that proved to be due to vesicovaginal reflux.
  
  
  METHODS
  Cases with a diagnosis of hydrocolpos or a fluid-filled vagina identified from our ultrasound database were retrospectively reviewed. The results from sonographic and fluoroscopic studies were reviewed, along with demographic and clinical data.
  
  
  RESULTS
  Four patients had sonographic findings mimicking obstructive hydrocolpos that resolved after voiding. Fluoroscopic studies showed abnormal urethral morphologic characteristics in all 4, diminished bladder capacity in 3, and vesicovaginal reflux in 3. No anatomic abnormalities were identified.
  
  
  CONCLUSIONS
  Vesicovaginal reflux can produce vaginal distension that is sonographically identical to obstructive hydrocolpos. This may be due to dysfunctional voiding issues. Postvoid sonography allows proper diagnosis.
authors.affiliation: Department of Radiology, Nationwide Children's Hospital, 700 Children's Dr, Columbus, Ohio 43205, USA.
authors.forename: Emma M
authors.initials: EM
authors.lastname: Snyder
authors.forename: Rechelle A
authors.initials: RA
authors.lastname: Nguyen
authors.forename: Keli J
authors.initials: KJ
authors.lastname: Young
authors.forename: Brian D
authors.initials: BD
authors.lastname: Coley
mesh_terms: D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D003951:Diagnostic Errors / Q000517:prevention & control*; D005260:Female; D006801:Humans; D052202:Hydrocolpos / Q000000981:diagnostic imaging*; D011859:Radiography; D014463:Ultrasonography; D014555:Urination Disorders / Q000000981:diagnostic imaging*