question: All of the following statements are true about calcifications in breast EXCEPT ?
opa: Microcalcification is defined as individual calcific opacities measuring <0.5m in diameter.
opb: Macrocalcification is defined as individual calcific opacities measuring >0.5m in diameter.
opc: Microcalfication is not specific to carcinoma
opd: Microcalcification is seen in greater then 50% of carcinomas on mammography