Beatriz E. Adrada MD, Presenter: Nothing to Disclose

Gaiane M. Rauch MD, PhD, Abstract Co-Author: Nothing to Disclose

Modupe Monroke Adeyefa MD, Abstract Co-Author: Nothing to Disclose

Lei Huo MD, Abstract Co-Author: Nothing to Disclose

Tanya W. Stephens MD, Abstract Co-Author: Nothing to Disclose

Wei Tse Yang MD, Abstract Co-Author: Nothing to Disclose

1. To present the chronological imaging changes of fat necrosis on mammography, ultrasound and MRI 2. To correlate the imaging features of fat necrosis with histopathology 3. To discuss distinctive imaging features of fat necrosis associated with the appropriate BI-RADS categories and indications for biopsy  

Accurate classification and description of fat necrosis imaging findings according to BI-RADS will help radiologists understand the benign spectrum (BI-RADS 2) and suspicious (BI-RADS 4) imaging findings that warrant biopsy. Mammography: BI-RADS 2: Circumscribed fat containing mass with peripheral curvilinear calcifications. BI-RADS 3: Amorphous clustered calcifications at the surgical scar site. BI-RADS 4: Pleomorphic clustered calcifications, irregular spiculated masses. Ultrasound: BI-RADS 2: Hyperechoic masses; cysts. BI-RADS 3: Fluid- filled masses with echogenic bands. BI-RADS 4: Complex masses with internal mural nodules; irregular spiculated masses MRI: BI-RADS 2: Masses with high signal on unenhanced non-fat saturated T1W imaging. BI-RADS 4: Irregular enhancing masses with variable kinetics, or nonmass enhancement.  

Knowledge of the imaging features of fat necrosis will help guide appropriate management that includes annual mammography (benign) or biopsy (suspicious) to exclude malignancy.

Adrada, B, Rauch, G, Adeyefa, M, Huo, L, Stephens, T, Yang, W, Management of Fat Necrosis of the Breast According to Imaging Features.  Radiological Society of North America 2013 Scientific Assembly and Annual Meeting, December 1 - December 6, 2013 ,Chicago IL. http://archive.rsna.org/2013/13017515.html