Ultrasound Diagnosis Of Benign And Malignant Lesions Diagnosed By Mammography X-ray Photography Study

PurposeTo evaluate the criteria of ultrasonographic (US) classification and its accuracy in differentiating benign from malignant breast lesions, and to evaluate the detecting ability of US classification for axillary lymphnode metastasis in 2154 Chinese women.Materials and methodsFrom January 2000 to October 2003, 2184 breast solid lesions (1454 malignant and 730 benign) were found in 2118 Chinese women who underwent bilateral whole breast ultrasonography prospectively. The US patterns (includings Doppler US) were recorded. The sonographic characteristics of malignant lesions included: (1) Irregular shape with more than 3 lobulations or microlobulated shape. (2) Irregular or ill-defined, no capsule was shown. (3) Hypoechogenecity with posterior attenuation. (4) Clustered small echogenic foci indicating microcalcification. (5) aboundant vascularity with RI ≥ 0.7 shown by Doppler ultrasound. Ultrasonographic characteristics of benign solid lesions included: (1) Solid lesion which was (a) ellipsoid or round in shape, (b) with thin, echogenic pseudocapsule, (c) hyperechogenicity. (2) Smple cystic lesion. According to the US appearances, every lesion was prospectively classified into four category as followed: Category Ⅰ was benign without any malignant sonographical feature; Category Ⅱ was equivocal or indeterminate; Category Ⅲ was probably malignant showing a lesion with one or two of malignant features; Category Ⅳ was malignant showing a lesion with more than 2 malignant features.The US classification for all 2184 lesions was correlated with the pathological...