Significance Of The CT And B Ultrasound In The Preoperative Diagnosis Of Parametrial Invasion And Lymph Node Metastasis In Cervical Cancer

Objective: To investigate the significance of CT and B ultrasound diagnosis ofcervical cancer parametrial invasion and lymph node metastasis in the Ⅰ B to stage Ⅱ A(seen visually, the tumor diameter≦4cm). Methods: A retrospective analysis of106cases of cervical cancer in the preoperative CT and B ultrasound cervical parametrialinfiltration and lymph node metastasis, the results were compared with pathologic results.Results:①The CT predict parametrial infiltration sensitivity of75%, and a specificity is90%, the positive predictive value is50%and negative predictive value is96.59%.②Bultrasound predict parametrial infiltration sensitivity is58.3%, a specificity is96.8%,positive predictive value is70%, negative predictive value is90.48%.③The sensitivityof CT predicting lymph node metastasis is69.2%, specificity is95%. The positivepredictive value was81.82%, negative predictive value was90.48%.④B-ultrasound topredict lymph node metastasis, the sensitivity of Se=38.5%, specificity Sp=95%,positive predictive value is71.43%, negative predictive value is82.61%.⑤Combined CTand B-ultrasound examination to dctect the cervical cancer, the parametrial infiltrationsensitivity was91.7%, specificity was85.1%, positive predictive value was91.67%,negative predictive value was75.47%.⑥The diagnosis of lymph node metastasis, thesensitivity was73.1%, specificity was92.5%, positive predictive value of73.8%, negativepredictive value was92.5%. Conclusion: Preoperative judgment for cervical cancerparametrial infiltration and lymph node metastasis, Comparion of CT/B ultrasound withpostoperative pathologic diagnosis is good agreement. CT and B ultrasound have ownimaging specificity characteristics. Own to the feature of CT imaging, the sensitivity andspecificity of CT were higher than B-ultrasound. Combined CT and B-ultrasoundexamination is superior to the single CT or B-ultrasound. Preoperative judgement ofcervical cancer parametrial invasion and lymph node metastasis, CT and B-ultrasound play an important supporting role.