| To elevate accuracy of CT T4 staging diagnosis of esophageal carcinoma,we analysized relativity between CT diagnosis and postoperational pathology for the tracheal,bronchial,carinate early invasion.Material and Method: From 1996 to 2002 we examined 49 patients with cervical and middle-upper segment esophageal carcinoma proved by esophagectomy and pathology, who underwent cervical or thoracic CT scaning before operation.Comparison was studied between postoperational pathology and CT diagnosis of tumor early invasion to the trachea ,bronchi and carina.Result: Of 49 patients with esophageal carcinoma , 21 lesions were in the cervical esophageal, out of 18 cases with tracheal early invasion performed by CT scaning, 14 cases comfirmed by postoperational pathology; 28 lesions in the middle-upper segment of thoracic esophageal, out of 17 cases with tracheal ,bronchial or carinate early invasion diagnosed by CT scaning, 14 cases testified by postoperational pathology.Tracheal , bronchial and carinate early invasion of esophageal carcinoma proved by CT did not accord with postoperational pathology completely . The sensitivity, specificity, and accuracy of CT diagnosis for the tracheal, bronchial and carinate early invasion of esophageal carcinoma were 93.3%,33.3%,76.2% in cervicalesophageal and 94.1% .81.8% . 89.3% in thoracic esophageal respectively. The contingency coefficients of preoperational CT scaning comparison with postoperational pathology are 0.52, 0.77 respectively.Conclusion: Early invasion to the trachea , bronchi and carina identified by conventional CT procedure for patients with esophageal cancer was more accurate and specific in thoracic than that in cervical. Esophageal tumor early invasion to the trachea , bronchi and carina performed with CT corresponded to postoperational pathology in some measure.Operatablity did not completely depend on the invasion of the trachea ,bronchi and carina of esophageal carcinoma performed with CT. |
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