Youichi Machida MD, PhD, Presenter: Nothing to Disclose

Mitsuhiro Tozaki MD, PhD, Abstract Co-Author: Nothing to Disclose

Akiko Shimauchi MD, Abstract Co-Author: Nothing to Disclose

Tamiko Yoshida, Abstract Co-Author: Nothing to Disclose

Yoshihide Kanemaki, Abstract Co-Author: Nothing to Disclose

1. Clustered ring enhancement (CRE)  becomes more distinct on delayed phase of dynamic contrast MRI following either a heterogeneous or clumped internal enhancement pattern on early phase. 3. When a non-mass enhancement (NME) bears both CRE internal pattern and segmental distribution, the lesion is highly predictive of malignancy. 4. While focal and regional distributions are descriptors of intermediate supicion, NMEs with such distributions are indicative of malignancy when CRE is observed, especially in combination with clumped internal pattern.  

CRE has reported to be high predictive of malignancy. Although this descriptor will be more widely used after the revision of BI-RADS, employing it without knowledge of its definition or characteristics can lead to misinterpretation and undesiable outcomes. Radiologists engaged in breast imaging will be able to promote a better understanding of CRE through the following contents; 1. Reviewing the definition of CRE: how can we detect it? 2. Corresponding pathological findings and assumed pathophysiology 3. Examples of CRE: assessment in combination with distributions  

http://abstract.rsna.org/uploads/2014/14001291/14001291_wlt5.pdf

Machida, Y, Tozaki, M, Shimauchi, A, Yoshida, T, Kanemaki, Y, You will See it When you Know it: Clustered Ring Enhancement, a New Breast MRI BI-RADS Descriptor for Internal Enhancement Pattern of Non-mass Enhancement.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14001291.html