Linear Distribution (image) Radiological Society of North America Caption Two-view screening mammograms obtained with the DR photoncounting system show pleomorphic calcifications in a linear distribution in the right upper quadrants (arrow). The diagnosis was DCIS, as depicted on the (a) right craniocaudal image, (b) right mediolateral oblique image, and (c) zoomed in craniocaudal image of the lesion. Credit Radiological Society of North America Usage Restrictions May use with credit Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.