Computed tomography(CT) has been used as an alternative to exploratory laparotomy for predicting the stage and resectability of gastric cancer. Differentiation of gastric wall and lymph node from adjacent organs with similar clarity was often
difficult
in conventional contrast-enhanced computed tomography (conventional CT)
For distinct differentiation these structures. Dynamic contrast enhanced computed tomography(dynamic CT) was prospectively performed in the gastric adenocarcinoma. These were compared with the histopathologic staging in evaluation of TNM stage.
Of
the
sixty eight patients, 46 cases and 22 cases were performed conventional CT and dynamic CT, respectively.
@ES The results were as follows:
@EN 1) In a comparison of serosal invasion by conventional CT and dynamic CT, sensitivity was 79.2% versus 94.7%, sepecificity was 86.4% versus 66.7%, and accuracy was 82.6% versus 90.9%. The accuracy of T stage by CT scaning compared that of the
histopathologic staging staging was 58.7% in conventional CT versus 68.2% in dynamic CT.
2) In a comparison of lymph node metastasis, sensitivity was 70.6% versus 71.4%, specificity was 44.8% versus 62.5%, and accuracy was 54.4% versus 68.2%. The accuracy of N stage was 41.3% in conventional CT versus 45.5% in dynamic CT.
3) The accuracy of TNM stage in totality was 28.% in conventional CT versus 59.1% in dynamic CT(p=0.029).
In conclusion, Dynamic CT is superior to conventional CT in evaluation of serosal invasion and metastatic lymphadenopathy.
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