LINEAR NON-MASS ENHANCEMENT

• Enhancement arrayed in a line (not necessarily a straight line) or a line that branches
• This distribution may elevate suspicion for malignancy because it suggests enhancement within or around a duct
• Next step: Consider biopsy to rule out DCIS

ACR BI-RADS® Atlas, Breast Imaging Reporting and Data System. Reston, VA: American College of Radiology; 2013.

Related Radiology Article: Chadashvili T, Ghosh E, Fein-Zachary V, Mehta TS, Venkataraman S, Dialani V, Slanetz PJ. Nonmass enhancement on breast MRI: review of patterns with radiologic-pathologic correlation and discussion of management. American Journal of Roentgenology. 2015 Jan;204(1):219-27.