MRI Detects Early Breast Cancer Cells
Study Shows MRI Screening Has High Detection Rate of Precancerous Cells
The Promise of MRI
About 20% of breast cancers now detected are confined to the milk ducts,
compared to just 2% prior to the widespread use of mammography.
In an editorial accompanying the German study, radiology professor Carla
Boetes, MD, PhD, of Radboud University in The Netherlands, writes that while
mammography had dramatically improved the detection of these very early breast
cancers, wider use of screening MRI might have an even greater impact.
"That only 20% of tumors detected through screening are pure DCIS is
disappointing, when one keeps in mind that most breast tumors probably evolve
from DCIS," she writes. "The observation that MRI detects many DCIS
lesions that go unnoticed on mammography implies that some invasive carcinomas
can be prevented by timely intervention on the basis of MRI findings."