title: Multidetector computerized tomography enema versus magnetic resonance enema in the diagnosis of rectosigmoid endometriosis.
abstract: OBJECTIVE
  To compare the accuracy of multidetector computerized tomography enema (MDCT-e) and magnetic resonance enema (MRI-e) in determining the presence of sigmoid and rectal endometriotic nodules.
  
  
  METHODS
  260 women (32.6 ± 4.3 years) with symptoms suggestive of rectosigmoid endometriosis underwent MDCT-e and MRI-e prior to laparoscopy. After retrograde colonic distention and injection of intravenous contrast medium, patients were scanned on a 64-row MDCT scanner. MRI-e was performed on a 1.5T magnet using an 8 channels phased array coil; intestinal distention was achieved by introducing in the rectum 250-300 ml of ultrasonographic gel diluted with saline solution. Radiological findings were compared with surgical and histological results.
  
  
  RESULTS
  176 women had rectosigmoid endometriosis at surgery. There was no significant difference in the accuracy of MDCT-e (98.5%) and MRI-e (96.9%) in the diagnosis of sigmoid and rectal endometriosis (p=0.248). The sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio of MDCT-e and MRI-e were respectively 98.3%, 98.8%, 99.4%, 96.5%, 81.59, 0.02 and 97.2%, 96.4%, 98.3%, 94.1%, 26.89, 0.03.
  
  
  CONCLUSIONS
  Both MDCT-e and MRI-e are accurate in the diagnosis of rectal and sigmoid endometriosis.
authors.affiliation: Department of Radiology, Galliera Hospital, via Mura delle Capuccine 14, 16128 Genoa, Italy. Electronic address: ennio.biscaldi@gmail.com.
authors.forename: Ennio
authors.initials: E
authors.lastname: Biscaldi
authors.affiliation: Department of Obstetrics and Gynecology, San Martino Hospital and National Institute for Cancer Research, University of Genoa, Largo Rosanna Benzi, 1, 16132 Genoa, Italy. Electronic address: simone.ferrero@unige.it.
authors.forename: Simone
authors.initials: S
authors.lastname: Ferrero
authors.affiliation: Department of Obstetrics and Gynecology, San Martino Hospital and National Institute for Cancer Research, University of Genoa, Largo Rosanna Benzi, 1, 16132 Genoa, Italy. Electronic address: ulrm@libero.it.
authors.forename: Umberto
authors.initials: U
authors.lastname: Leone Roberti Maggiore
authors.affiliation: Department of Obstetrics and Gynecology, San Martino Hospital and National Institute for Cancer Research, University of Genoa, Largo Rosanna Benzi, 1, 16132 Genoa, Italy. Electronic address: vremorgida@yahoo.it.
authors.forename: Valentino
authors.initials: V
authors.lastname: Remorgida
authors.affiliation: Department of Obstetrics and Gynecology, San Martino Hospital and National Institute for Cancer Research, University of Genoa, Largo Rosanna Benzi, 1, 16132 Genoa, Italy. Electronic address: venturini@unige.it.
authors.forename: Pier Luigi
authors.initials: PL
authors.lastname: Venturini
authors.affiliation: Department of Radiology, Galliera Hospital, via Mura delle Capuccine 14, 16128 Genoa, Italy. Electronic address: rollandi@galliera.it.
authors.forename: Gian Andrea
authors.initials: GA
authors.lastname: Rollandi
mesh_terms: D000328:Adult; D001466:Barium Sulfate; D003287:Contrast Media; D004715:Endometriosis / Q000175:diagnosis*; D004733:Enema / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D061330:Multidetector Computed Tomography / Q000379:methods*; D012002:Rectal Diseases / Q000175:diagnosis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012810:Sigmoid Diseases / Q000175:diagnosis*
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate
keywords: Bowel endometriosis; Enema; Magnetic resonance imaging; Multidetector computerized tomography; Rectum; Sigmoid