Analysis of DCE-MRI Features and Diagnostic Value of Non-mass-enhancing Benign and Malignant Breast Lesions
Objective To investigate the appearance and diagnostic value of dynamic contrast-enhanced MRI(DCE-MRI)in benign and malignant breast lesions with non-mass-like enhancement(NMLE).Methods A total of 90 patients with breast NMLE lesions admitted to the hospital from May 2018 to June 2022 were selected.DCE-MRI was performed on all patients before operation,and the results of surgical pathology were observed.To analyze the diagnostic performance of DCE-MRI for benign and malignant breast NMLE lesions and the DCE-MRI performance of benign and malignant breast NMLE lesions.Results Among the 90 patients with breast NMLE lesions,64 cases were diagnosed with malignant lesions,including 2 cases of phyllodes tumors,2 cases of invasive micropapillary carcinomas,2 cases of mucinous carcinomas,49 cases of invasive ductal carcinomas,and 9 cases of intraductal carcinomas(including semi-micro-infiltration).There were 26 cases of benign lesions,including 11 cases of breast hyperplastic adenopathy,11 cases of fibroadenoma,and 4 cases of atypical hyperplasia of the epithelium.Taking the surgical and pathological examination results as the"gold standard",the sensitivity of DCE-MRI in the diagnosis of benign and malignant breast NMLE lesions was 93.85％,specificity was 84.62％,accuracy was 92.22％,positive predictive value was 95.31％and negative predictive value was 88.00％.DCE-MRI of breast NMLE lesions showed speckle-like enhancement and diffuse distribution were more common in benign lesions,while cluster enhancement and segmental distribution were more common in malignant lesions(P＜0.05).The apparent diffusion coefficient(ADC)value of breast NMLE malignant lesion group was lower than that of breast NMLE benign lesion group(P＜0.05).Conclusion DCE-MRI has a high diagnostic value for breast NMLE lesions.When the DCE-MRI of breast NMLE lesions shows speckle-like enhancement or diffuse distribution,it indicates benign lesions,and cluster enhancement or segmental distribution indicates malignant lesions.
Non-mass Like Enhancement of BreastDynamic Contrast-enhanced MRIBenign and MalignantDiagnosis
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