Jin Chung MD, Presenter: Nothing to Disclose

Eun-Suk Cha MD, Abstract Co-Author: Nothing to Disclose

Jee Eun Lee MD, Abstract Co-Author: Nothing to Disclose

Jeoung Hyun Kim, Abstract Co-Author: Nothing to Disclose

Bo Bae Lee, Abstract Co-Author: Nothing to Disclose

To compare the diagnostic performance of DBT and US for the dense breasts with category 0 at conventional DM. 

From December 2012 to March 2013, DBT, breast US and DM were performed in 202 patients. Among them, 156 patients were dense breasts (ACR pattern 3 and 4) and 108 lesions of 108 patients were categorized as BI-RADS 0 (asymmetry, 84; calcifications, 6; asymmetry with calcifications, 18). BI-RADS final assessment for DBT and US were recorded. BI-RADS category 1-3 was considered benign, and BI-RADS category 4 and 5 were considered malignant. Sixty-two lesions underwent biopsy or surgical excision and others had at least 1 year of follow-up data. 

Among 108 lesions, 17 (15.7%) were malignant and 91 (84.3%) were benign. Final assessments of US were categorized as follows: category 1 in 5, category 2 in 6, category 3 in 38, category 4a in 34, category 4b in 12, category 4c in 1 and category 5 in 12. For DBT, final assessments were categorized as follows: category 1 in 34, category 2 in 16, category 3 in 24, category 4a in 13, category 4b in 4, category 4c in 3, category 5 in 14. The sensitivity and negative predictive value were 100% for both US and DBT. For US, specificity and positive predictive value were 53.9 and 28.8%. For DBT, specificity and positive predictive value were 81.3 and 50%. Diagnostic accuracy of US and DBT were 61.1 and 84.3%. Benign biopsy rate of DBT (50%, 17/34) was lower than that of US (71.2%, 42/59). 

For dense breasts, DBT showed better diagnostic performance than breast US. DBT may reduce the benign biopsy rate and short term follow-up. 

DBT is a beneficial method for dense breasts on DM, with reducing unnecessary breast biopsy and short-term follow-up. 

Chung, J, Cha, E, Lee, J, Kim, J, Lee, B, Digital Breast Tomosynthesis (DBT) and Breast Ultrasound (US): Additional Roles in Dense Breasts with Category 0 at Conventional Digital Mammography (DM).  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14010610.html