title: Dynamic MR defecography of the posterior compartment: Comparison with conventional X-ray defecography.
abstract: OBJECTIVE
  The goal of this study was to compare conventional X-ray defecography and dynamic magnetic resonance (MR) defecography in the diagnosis of pelvic floor prolapse of the posterior compartment.
  
  
  METHODS
  Fifty women with a mean age of 65.5 years (range: 53-72 years) who underwent X-ray defecography and MR defecography for clinical suspicion of posterior compartment dysfunction, were included in this retrospective study. X-ray defecography and dynamic MR defecography were reviewed separately for the presence of pelvic organ prolapse. The results of the combination of X-ray defecography and MR defecography were used as the standard of reference. Differences in sensitivities between X-ray defecography and MR defecography were compared using the McNemar test.
  
  
  RESULTS
  With the gold standard, we evidenced a total of 22 cases of peritoneocele (17 elytroceles, 3 hedroceles and 2 elytroceles+hedroceles), including 15 cases of enterocele, 28 patients with rectocele including 16 that retained contrast, 37 cases of rectal prolapse, and 11 cases of anismus. The sensitivities of X-ray defecography were 90.9% for the diagnosis of peritoneocele, 71.4% for rectocele, 81.1% for rectal prolapse and 63.6% for anismus. The sensitivities of MR defecography for the same diagnoses were 86.4%, 78.6%, 62.2% and 63.6%, respectively. For all these pathologies, no significant differences between X-ray defecography and MR defecography were found.
  
  
  CONCLUSIONS
  Dynamic MR defecography is equivalent to X-ray defecography for the diagnosis of abnormalities of the posterior compartment of the pelvic floor.
authors.affiliation: Women's imaging center, hôpital de Valenciennes, avenue Désandrouin, 59300 Valenciennes, France. Electronic address: poncelet.edouard@gmail.com.
authors.forename: E
authors.initials: E
authors.lastname: Poncelet
authors.affiliation: Department of urology, hôpital Saint-Philibert, GHICL, 115, rue du Grand-But, BP 249, 59462 Lomme cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Rock
authors.affiliation: Division of gastroenterology, hôpital Claude-Huriez, hôpital régional universitaire de Lille, rue Michel-Polonovski, 59037 Lille cedex, France.
authors.forename: J-F
authors.initials: JF
authors.lastname: Quinton
authors.affiliation: Gynecological surgery department, hôpital Jeanne-de-Flandre, regional university hospital of Lille, rue du Pr-Emile-Laine, 59037 Lille cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Cosson
authors.affiliation: Biostatistics department, hôpital régional universitaire de Lille, 6, rue du Professeur-Laguesse, 59045 Lille cedex, France.
authors.forename: N
authors.initials: N
authors.lastname: Ramdane
authors.affiliation: Women's imaging center, hôpital de Valenciennes, avenue Désandrouin, 59300 Valenciennes, France.
authors.forename: L
authors.initials: L
authors.lastname: Nicolas
authors.affiliation: Department of medical imaging, hôpital d'Armentières, 112, rue Sadi-Carnot, 59421 Armentières, France.
authors.forename: A
authors.initials: A
authors.lastname: Feldmann
authors.affiliation: Biostatistics department, hôpital régional universitaire de Lille, 6, rue du Professeur-Laguesse, 59045 Lille cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Salleron
mesh_terms: D000368:Aged; D019841:Defecography / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D059952:Pelvic Floor Disorders / Q000000981:diagnostic imaging*; D056887:Pelvic Organ Prolapse / Q000000981:diagnostic imaging*; D020047:Rectocele / Q000000981:diagnostic imaging*; D012680:Sensitivity and Specificity
keywords: Defecography; MR defecography; Pelvic floor weakness; Pelvic organ prolapse