体部CT扫描诊断乳癌的应用（附42例分析）

Using Body CT Scan in Diagnosis of Breast Cancer(Analysis of 42 Cases)

用体部ＣＴ对７５例乳房肿块进行了检查，其中４２例为乳癌。增强扫描癌灶有显著增强，绝大部分病例比平扫ＣＴ值增加３０ＨＵ以上，因此可显示常规Ｘ线摄影中未显示出的或与周围乳腺增生病变不能分辨的癌灶。本组乳癌ＣＴ诊断的敏感性９５．２４％，特异性８９．３９％，准确率９２．６６％，与干板摄影互补准确率达９６％。讨论了乳癌ＣＴ检查的鉴别诊断及其难点。作者认为ＣＴ扫描可补常规乳房Ｘ线摄影之不足。

Seventy five cases of breast mass were examinated by body CT scanner.Of these,42 are cancers.On post-contrast scan,the cancer foci show enhancement.In most cases,the CT values increase 30HU or more than that of pre-contrast scan.Thus,it can demonstrate the cancer focus that cannot show or indistinguishable by the conventional mammography with mammary hyperplasia around it.In this group,the CT diagnostic sensibility is 95.24%,specificity is 89.39%,correctibility is 92.66%.It may be as mutual complementation with xeromammography.Thus,the correctibility rises up to 96%.The differential diagnosis of breast cancer and its difficulty are discussed.Authors consider that computed tomography scan may help to correct the defect of conventional mammography.