Analytical study of the diagnosis of BI-RADS grade 0 on mammography

LI Lan; LIN Nai-er; HUA Jia; CHEN Jie; CHENG Fang; ZHANG Ke-bei

Abstract：Objective To analyze the factors influencing the diagnosis of BI-RADS grade 0 on mammography .Methods 55 lesions with the diagnosis of BI-RADS grade 0 on mammography in 53 patients were enrolled in our study during the peroid from October 2012 to May 2013 .The lesions’ features were retrospectively analyzed ,and the malignent rates of each feature were calculated .Results All of the lesions with the diagnosis of BI-RADS grade 0 on mammography were found in the breast tissue of dense type (33 cases) or mixed type (22 cases) ,rather than the fatty type .The common find-ings of lesions with the diagnosis of BI-RADS grade 0 were showed as follows :① Focal gland abnormality (asymmetric density or gland architectural distortion) in 20 cases ;② suspicious mass or nodule with obscure boundary in 28 cases ;③suspicious calcification in 28 cases .All the signs could be found alone or combined with others ,and the malignant rates of all the signs were listed respectively as follows :suspicious calcifications alone was 57 .1% (4/7) ,suspicious mass or nod-ule with calcifications 27 .3% (3/11) ,Focal gland abnormality with calcifications 20% (2/10) ,Focal gland abnormality a-lone 10% (1/10) ,and suspicious mass or nodule alone 5 .9% (1/17) .Conclusion The diagnosis of BI-RADS grade 0 on mammography could hardly be avoided because of various objective or subjective reasons .The common findings in the breast tissue of dense or mixed type ,which were mentioned above ,especially suspicious calcifications ,shoud be paid atle-ntion .