Paula Martinez Miravete, Abstract Co-Author: Nothing to Disclose

Luis Javier Pina MD, PhD, Presenter: Nothing to Disclose

Carmen Minguillon, Abstract Co-Author: Nothing to Disclose

Breast distorsions comprise one of the most challenging diagnosis in conventional 2D-Digital Mammography (2D-DM), being the most frequent causes of misdiagnosis, particularly in women with dense breast. Our aim is to demonstrate the usefulness of DBT in discarding or confirming distorsions found in breast 2D-DM, and to establish its role in reducing patient recall, limiting complementary projections, and minimizing the number of unnecessary biopsies.

In a period From November 2010-March 2011 we have examined 1300 consecutive women with a Dimensions Mammography. 2D-DM (2 projections) and 3D-DBT (2 projections) were performed simultaneously. We analyzed the distorsions seen in 2D-DM that persisted in DBT. No complementary projections were necessary. Interventional procedures were necessary only in few cases. Clinical and pathologic findings will be illustrated.

108 architectural distorsions were found in 2D-DM. More than half of them (79, 73,14%) disappeared with DBT, which corresponded to vascular structures (39), intrammarian lymphatic nodules (4), cutaneous lesions (3) and normal breast tissue overlapping (33). No more studies were necessary. Only 29 (26,85 %) distorsions persisted in DBT. Four were palpable. Biopsy was performed in all this 29 distorsions. Pathologic results were: 7 malignant (3 IDC, 1 IDC with ISDC, 1 Undifferentiated Carcinoma and 2 Tubular carcinomas), 5 complex hyperplasia with atypia, 2 radial scars, and 15 benign lesions.

DBT rejects false distorsions produced by overlapping tissue and confirms the presence of pathologic or real distorsions. DBT avoids women recalls, complementary projections and unnecessary biopsies.

DBT confirms pathologic architectural distorsions of the breast without need of complementary projections.

Martinez Miravete, P, Pina, L, Minguillon, C, Digital Breast Tomosynthesis (DBT) and Its Usefulness in the Management of Breast Distortions Detected in Conventional Mammography.  Radiological Society of North America 2011 Scientific Assembly and Annual Meeting, November 26 - December 2, 2011 ,Chicago IL. http://archive.rsna.org/2011/11005534.html