|
Outcomes of US BI-RADS 4A, 4B, and 4C Lesions |
|
Jae Wang Shin, MD Eun Young Ko, MD, Boo-Kyung Han, MD, Jung Hee Shin, MD, Seok Seon Kang, MD, Soo Yeon Hahn, MD |
|
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine |
|
Purpose: The aim of our study was to evaluate the outcomes of sonographic (US) BIRADS category 4 lesions according to subcategories 4A, 4B, and 4C and palpability.
Materials and Methods: We retrospectively reviewed the pathology results of 512 US BI-RADS category 4 lesions in 460 patients after ultrasound-guided percutaneous biopsy (n = 435) and surgical biopsy (n = 77). We analyzed the results according to subcategories 4A, 4B, 4C, and palpability, and compared outcomes of five breast radiologists.
Results: In BI-RADS 4A lesions (n = 302), biopsy results indicated 48 malignancies(15.9%). In BI-RADS 4B lesions (n = 113), biopsy revealed 69 malignancies (61.1%).
Among BI-RADS 4C lesions (n = 97), 87 lesions were malignancies (89.7 %).
Palpability had no correlation with the rate of malignancy in BI-RADS category 4 lesions, and the rate of malignancy for category 4A ranged widely from 8.1% - 26.4%.
Conclusions: The outcomes of US BI-RADS category 4 lesions according to subcategories varied widely between radiologists, especially for 4A lesions. The US finding itself warrants a BI-RADS 4 subcategory. In category 4 lesions, the malignant rate
was the same between palpable and nonpalpable lesions. |
|
Keyword : Breast; BI-RADS, Inter-observer variability, Ultrasound (US) |
|
pdf파일 : 275신재왕,고은영.pdf
|
|