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

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.