MRI、钼靶和超声对乳腺非肿块样强化病变诊断的对比研究

Comparative Study of MRI, Mammography and Ultrasonography in the Diagnosis of Breast Diseases Presented as Non-mass Like Enhancement

目的探讨MRI、钼靶和超声检测乳腺非肿块样强化(NMLE)病灶的效能。资料与方法以病理诊断为"金标准",分析80例NMLE病灶的MRI、钼靶和超声的诊断效能,分析三者的主要影像特征。结果病理结果51例恶性,29例良性。钼靶、超声和MRI鉴别乳腺良、恶性病变的敏感度分别为41.2%、37.3%和88.2%,特异度分别为96.6%、93.1%和62.1%。钼靶判断乳腺癌的主要依据为钙化,超声判断依据为低回声区中的异常血流和钙化。结论超声和钼靶检测NMLE病变的敏感度低,容易漏诊;MRI的敏感度高。超声的血流和钼靶的钙化信息对鉴别诊断有帮助。

Purpose To compare the efficacy of MRI, ultrasonography and mammography in detecting breast diseases presented as non-mass like enhancement （NMLE） on MRI. Materials and Methods Pathologic diagnosis as the gold standard, the MRI, ultrasonography and mammography data of 80 patients which presented as NMLE lesions on MRI were retrospectively reviewed. Their diagnostic performance and imaging features were analyzed. Results Pathologically, 51 were malignant and 29 were benign. The sensitivity of mammography, ultrasonography and MRI was 41.2%, 37.3%, 88.2%, respectively and the specificity was 96.6%, 93.1%, 62.1%, respectively. The calcification on mammography and the blood flow on ultrasonography were the key indexes for cancer detection and diagnosis. Conclusion Ultrasonography and mammography have poor sensitivity in detecting breast lesions and may lead to misdiagnosis. MRI has higher sensitivity. The calcification on mammography and the blood flow on ultrasonography may be helpful for differential diagnosis.