The image diagnosis in early breast cancers in clinically studied.(1) Echography(1) After Hitachi EUB2D 7.5 MHZ being used, the accurate diagnosis rate and false negative rate in invasive breast cancers are 90.9% and 9.1%, in tumors less than 1.0 cm in diameter, and 92.0%, 8.0% in those from 1.0 to 2.0 cm respectively. All tumors more than 0.5 cm in diameter can be represented as tumor echo. (2) The accurate rate in non invasive breast cancers is 69.2%.(2) Mammography(1) Accurate and false negative rates in invasive breast cancers are 47.1% and 52.9%, in tumors less than 1.0 cm in diameter, and 80.7% and 19.3% in those from 1.0 to 2.0 cm respectively. Diagnostic rate in tumors less than 1.0 cm is bad. It is as not so good as 57.1% in non invasive breast cancers. (2) The 52.9% of infiltrating breast cancer tumors less than 1.0 cm and 83.2% of those from 1.0 to 2.0 cm can be represented as tumor shadow. The previous date was bad. Tumor shadow can be visualized in 57.1% of non invasive tumors. It is 64.7% in invasive ductal carcinomas with a predominant intraductal component. (3) The appearance rates of fine calcification (FC) are 23.5% in less than 1.0 cm and 43.2% in from 1.1 to 2.0 cm invasive cancers, while 50.0% in non invasive ones. (4) The cases having no tumor shadow but FC are found in 25.0% of invasive cancers less than 1.0 cm and 26.7% of those in from 1.1 to 2.0 cm. It is 33.3% in non invasive breast ones.
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