2016년에 한 기관에서의 유방 초음파 BI-RADS 범주 4와 5 병변의 양성예측도

Abstract

Purpose: To retrospectively analyze the positive predictive values (PPVs) of the breast lesions classified as categories 4 and 5 by using Breast Imaging reporting and Date System (BI-RADS) ultrasonography (US). Materials and Methods: Between January 2016 and December 2016, the 2,073 breast lesions of 1,792 patients were reported BI-RADS US category 4 and 5. We reviewed the frequency, pathologic or clinical course. The positive predictive value (PPV)s for category 4a, 4b, 4c and 5 were evaluated. Results: Among the 2,073 lesions, finally 2014 lesions were pathologically diagnosed. Among them, the 1,333 lesions were pathologically confirmed as benign lesions and the 681 lesions were pathologically confirmed as malignant lesions. The PPV for category 4 was 22.8% and the PPVs for subcategory 4a, 4b and 4c 5 were 9.0%, 46.4% and 84.2%. And the PPV for category 5 was 98.2%. Conclusion: The PPVs for BI-RADS US category 4a, 4b, 4c and 5 at year 2016 were presented to show the reference range of BI-RADS US, so it was appropriately subcategorized.