title: [Comparative study of barium enema, computed tomography and magnetic resonance imaging in preoperative diagnosis of colorectal carcinoma].
abstract: OBJECTIVE
  To compare the diagnostic value of barium enema (BE), computed tomography (CT) and magnetic resonance imaging(MRI) in primary colorectal carcinoma.
  
  
  METHODS
  A total of 64 patients with suspected colorectal carcinoma received BE (n=39), spiral CT (n=31) and MRI (n=42). The detective results were compared with the surgical results.
  
  
  RESULTS
  Among 64 patients, 54 cases were pathologically proved as colorectal carcinoma. The diagnostic sensitivity of BE,CT and MRI was 96.9% ,96.2% and 97.1% ,and the overall accuracy was 92.3% 83.9 % and 90.5% respectively. The overall accuracy of CT and MRI for tumor T staging was 73.1% and 82.9% respectively.
  
  
  CONCLUSIONS
  BE can be considered as a primary approach for diagnosing colorectal carcinoma, CT and MRI be necessary diagnostic approaches. Combined BE with MRI is the best choice for diagnosing of colorectal carcinoma.
authors.affiliation: Department of Radiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510089, China.
authors.forename: Xiang-ran
authors.initials: XR
authors.lastname: Cai
authors.forename: Quan-fei
authors.initials: QF
authors.lastname: Meng
authors.forename: Di-hua
authors.initials: DH
authors.lastname: Chen
authors.forename: Jin-cheng
authors.initials: JC
authors.lastname: Chen
authors.forename: Si-run
authors.initials: SR
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D004733:Enema; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D012680:Sensitivity and Specificity; D036542:Tomography, Spiral Computed
chemical_list: D001466:Barium Sulfate