title: Efficacy of hydrogastric sonography and spiral Computed Tomography in staging of gastric carcinoma--a comparative study.
abstract: OBJECTIVE
  Accurate preoperative diagnosis and staging of patients with gastric cancer is essential for optimal treatment. The standard of care for staging gastric carcinoma is helical CT. This study was conducted to compare the efficacy of hydrogastric sonography (HGS) with that of helical CT in the staging of patients with gastric carcinoma.
  
  
  METHODS
  A total of 42 consecutive patients (29 men and 13 women) diagnosed with gastric carcinoma after endoscopy and biopsy were staged on the basis of TNM classification, preoperatively with HGS and helical CT and postoperatively with histopathologic examination (HPE). The findings of HGS and helical CT were compared with those on HPE with respect to TNM stage.
  
  
  RESULTS
  Regarding T stage, the accuracy of HGS was 78.6% (kappa = 0.68) and that of helical CT was 66.7% (kappa = 0.48). In evaluating the nodal status, the accuracy of HGS was 66.7% (kappa = 0.52) and that of helical CT was 54.6% (kappa = 0.39). Regarding distant metastases, accuracy was the same with HGS and helical CT (accuracy 95.2%, kappa = 0.89).
  
  
  CONCLUSIONS
  When compared with HPE, HGS was found to be more accurate than helical CT for assessment of T and N staging. Sonographic and helical CT were equally accurate for the assessment of M stage.
authors.affiliation: Department of Radiology, Jawaharlal Institute of Post-graduate Medical Education and Research, Puducherry, India.
authors.forename: I
authors.initials: I
authors.lastname: Venkataraman
authors.forename: Himagirish K
authors.initials: HK
authors.lastname: Rao
authors.forename: Puran
authors.initials: P
authors.lastname: Singh
authors.forename: S
authors.initials: S
authors.lastname: Elangovan
authors.forename: Vikram
authors.initials: V
authors.lastname: Kate
mesh_terms: D000328:Adult; D000368:Aged; D001706:Biopsy; D003287:Contrast Media; D003974:Diatrizoate Meglumine / Q000008:administration & dosage; D005260:Female; D005773:Gastroscopy; D006801:Humans; D015552:Injections, Intralesional; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D036542:Tomography, Spiral Computed; D014159:Transducers; D014463:Ultrasonography
chemical_list: D003287:Contrast Media; D003974:Diatrizoate Meglumine