X线摄影和螺旋CT诊断乳腺良恶性肿瘤的评价

目的：参照X线摄影在乳腺疾病诊断方面的特点．评价用螺旋CT扫描乳腺技术的诊断价值。方法：将外科手术证实的156例乳腺疾病患者分为乳腺癌组和非乳腺癌组．观察X线摄影和螺旋CT扫描对乳腺良恶性疾病诊断的准确性，并比较各自的优缺点。结果：156例有乳腺肿块的患者中．经手术和病理证实乳腺癌65例．乳腺良性疾病91例。65例乳腺癌中有10例乳腺X线摄影检查为阴性．其中4例因腺体致密而不能确诊。这4例中螺旋CT检出2例阳性病变。乳腺X线摄影诊断的敏感性和特异性分别为84．6％和83．5％．螺旋CT扫描为83．1％和76．9％。乳腺X线摄影和螺旋CT扫描的阳性预测值分别为78．6％和72．0％，其阴性预测值为88．4％和86．4％。结论：对于乳腺良恶性肿瘤的检查．首选乳腺X线。必要时CT可作为补充。

Assessment of mammography and spiral CT scanning in breast cancer diagnosis

Objective:To assess the diagnostic accuracy of spiral CT (SCT) scanning as compared with that of mammography.Methods:156 patients had been examined by both mammography and SCT scanning before surgery.The patients were divided into two groups:cancer and non cancer.The diagnostic accuracy of these two modalities were calculated. Results: Of 156 patients,65 had breast cancer and 91 had benign lesions.The sensitivity and specificity for mammography were 84.6% and 83.5% respectively,and 83.1% and 76.9% for SCT scanning.The positive predictive values for mammography and SCT scanning were 78.6% and 72.0% respectively;the negative predictive values for these two modalities were 88.4% and 86.4%.Conclusion:SCT scanning,as an adjunct to mammography,can enhance sensitivity and predictive value of positivity in detecting breast cancer,especially in radiographically dense breast.