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AIM:To evaluate spiral computed tomography (CT) includingvirtual gastroscopy for diagnosis of gastric carcinoma incomparison with upper gastrointestinal series (UGI),fiberoptic gastroscopy (FG) and histopathology.METHODS:Sixty patients with histologically proven gastriccarcinoma (54 advanced and 6 early) were included in thisstudy.The results of spiral CT were compared with those ofUGI and FG.Two observers blindly evaluated images of spiralCT and UGI and video recording of FG with consensus interms of diagnostic confidence with a five-point scale.Sensitivities of lesion detection,Borrmann’s classification ofspiral CT,UGI and FG,as well as the accuracy of TNM stagingof spiral CT were determined by comparing them to surgicaland histological findings.RESULTS:The lesion detection rate was 98% (59/60),95% (57/60) and 98% (59/60) for spiral CT,UGI and FG,respectively.There were no statistical differences in thedetection sensitivity among the three techniques (P>0.05).For the sensitivity in Borrmann’s classification,spiral CT washigher than that of UGI (P=0.025) and similar to that of FG(P>0.05).The accuracy of spiral CT in staging the gastriccarcinoma was 76.7%.Six cases of early gastric carcinomawere all detected by spiral CT as well asFG.CONCLUSION:Spiral CT is equivalent to UGI and FG inthe detection of gastric carcinoma,and superior to UGI butsimilar to FG in the Borrmann’s classification of advancedgastric carcinoma.Spiral CT is more valuable than FG in thestaging of gastric carcinoma.
AIM: To evaluate spiral computed tomography (CT) includingvirtual gastroscopy for diagnosis of gastric carcinoma incomparison with upper gastrointestinal series (UGI), fiberoptic gastroscopy (FG) and histopathology.METHODS: Sixty patients with histologically proven gastriccarcinoma (54 advanced and 6 early) were included in thisstudy.The results of spiral CT were compared with those of UGI and FG.Two observers blindly evaluated images of spiralCT and UGI and video recording of FG with consensus interms of diagnostic confidence with a five-point scale. Sensitivities of lesion detection, Borrmann’s The classification ofspiral CT, UGI and FG, as well as the accuracy of TNM staging of spiral CT were determined by comparing them to surgicaland histological findings .RESULTS: The lesion detection rate was 98% (59/60), 95% (57/60) and 98% (59/60) for spiral CT, UGI and FG, respectively. There were no statistical differences in the detection sensitivity among the three techniques (P> 0.05). For the sensitivity in B orrmann’s classification, spiral CT washigher than that of UGI (P = 0.025) and similar to that of FG (P> 0.05). The accuracy of spiral CT in staging the gastric cancer was was 76.7%. Six cases of early gastric carcinomawere all detected by spiral CT as well as FG.CONCLUSION: Spiral CT is equivalent to UGI and FG inthe detection of gastric carcinoma, and superior to UGI buts to FG in the Borrmann’s classification of advanced gastric carcinoma. Spiral CT is more valuable than FG in the staging of gastric carcinoma.