title: Accuracy of magnetic resonance imaging and rectal endoscopic sonography for the prediction of location of deep pelvic endometriosis.
abstract: BACKGROUND
  We compared the accuracy of magnetic resonance imaging (MRI) and rectal endoscopic sonography (RES) for the diagnosis of deep pelvic endometriosis (DPE), with respect to surgical and histological findings.
  
  
  METHODS
  Longitudinal study of 88 consecutive patients referred for surgical management of DPE, who underwent both MRI and RES pre operatively. The diagnostic criteria were identical for MRI and RES and were based on visualization of hypointense/hypoechoic areas in specific locations. DPE was diagnosed when at least one site was involved. We calculated the sensitivity, specificity, predictive values, accuracy and 95% confidence interval of MRI and RES for DPE.
  
  
  RESULTS
  DPE and endometriomas were present in 97.7 and 39.7% of women, respectively. The sensitivity, specificity and positive and negative predictive values of MRI and RES, respectively, were 84.8 and 45.6%, 88.8 and 40%, 98.5 and 87.8% and 40 and 8.5% for uterosacral endometriosis; 77.7 and 7.4%, 70% and 100, 85.3 and 100% and 89.7 and 70.9% for vaginal endometriosis and 88.3 and 90%, 92.8 and 89.3%, 96.4 and 94.7% and 78.8 and 80.6% for colorectal endometriosis.
  
  
  CONCLUSIONS
  MRI is more accurate than RES for the diagnosis of uterosacral and vaginal endometriosis, whereas the two methods are similarly accurate for colorectal endometriosis.
authors.affiliation: Services de Radiologie, Hôpital Tenon, Paris, APHP, France. marc.bazot@tnn.aphp.fr
authors.forename: Marc
authors.initials: M
authors.lastname: Bazot
authors.forename: Carole
authors.initials: C
authors.lastname: Bornier
authors.forename: Gil
authors.initials: G
authors.lastname: Dubernard
authors.forename: Gilles
authors.initials: G
authors.lastname: Roseau
authors.forename: Annie
authors.initials: A
authors.lastname: Cortez
authors.forename: Emile
authors.initials: E
authors.lastname: Daraï
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000175:diagnosis* / Q000000981:diagnostic imaging*; D019160:Endosonography; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010388:Pelvis; D011237:Predictive Value of Tests; D012007:Rectum; D012680:Sensitivity and Specificity