In this Tuesday afternoon session, Ana Belen Delgado, MD, and colleagues will present findings from a study that included 228 women with known breast cancer; the study was conducted from December 2007 to January 2010.
From among 228 consecutive breast MRI reports (the analysis included cases of preoperative evaluation of patients with known cancer), 138 lesions were nonpalpable, visible on MRI, and occult on first-look ultrasound. Ultrasound and mammography were recommended for a second look, and Delgado's team ended up studying 123 lesions.
The team made ultrasound correlation in 76 (64.4%) of the lesions, with 26 (34.2%) of these being malignant cases.
Most additional malignant lesions of multifocal, multicentric, and bilateral nonpalpable carcinomas detected at second-look ultrasound that were previously unsuspected by mammography and ultrasound at diagnosis are small (less than 7 mm) and BI-RADS categories 2 and 3, the team concluded.
