title: Diagnostic accuracy of multidetector row computed tomography in T- and N staging of gastric cancer with histopathologic correlation.
abstract: OBJECTIVE
  To evaluate the diagnostic accuracy of multidetector row computed tomography (MDCT) for the preoperative T- and N staging of gastric cancer.
  
  
  METHODS
  Eighty-four consecutive patients with gastric cancer underwent preoperative MDCT. Except for 15 patients who did not undergo surgery, 69 patients were included in our study. Two radiologists independently evaluated the T- and N staging on the axial CT images alone and in combination with the MPR images. For N staging, the new TNM and Japanese classifications were independently used. Differences in staging accuracy for T- and N staging were assessed using the McNemar test.
  
  
  RESULTS
  The overall T staging accuracy of the axial and combined axial and MPR images was as follows: 67% (47 of 70 cancers) versus 77% (54 of 70 cancers) (P=0.039). The overall N staging accuracy of the axial and combined axial and MPR images was as follows: 59% (41 of 69 cancers) versus 67% (46 of 69 cancers) (P=0.180, Japanese classification) and 54% (37 of 69 cancers) versus 59% (41 of 69 cancers) (P=0.109, TNM classification).
  
  
  CONCLUSIONS
  Using MPR images enables more accurate preoperative T staging of gastric cancer, but not for N staging in either classification system.
authors.affiliation: Department of Diagnostic Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, YongDong Severance Hospital, Seoul, South Korea.
authors.forename: Jin
authors.initials: J
authors.lastname: Hur
authors.forename: Mi-Suk
authors.initials: MS
authors.lastname: Park
authors.forename: Jae Hee
authors.initials: JH
authors.lastname: Lee
authors.forename: Joon Seok
authors.initials: JS
authors.lastname: Lim
authors.forename: Jeong-Sik
authors.initials: JS
authors.lastname: Yu
authors.forename: Yoo Jin
authors.initials: YJ
authors.lastname: Hong
authors.forename: Ki Whang
authors.initials: KW
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods*; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods*