74-year-old female with recently diagnosed right breast cancer submitted outside breast MRI for review. Outside ultrasound dated 12/8/2015 demonstrated a 5 mm mass in the right breast 3:00 position, which was proven to be IDC and DCIS. On postcontrast images, moderate parenchymal enhancement is seen bilaterally which may reduces the sensitivity of this examination in evaluation of subtle mass or nonmass enhancement.In the right breast, approximately 3:00 position, 6.1 cm from the nipple base, there is some susceptibility artifact from the biopsy marking clip is noted. There is peripheral enhancement surrounding this biopsy clip measuring 1.1 x 1 x 1.5 cm ( LR x AP X SI ), compatible with the known history of biopsy-proven invasive ductal carcinoma and DCIS.In the right breast, medial to the index mass, 3:00 position, 5.3 cm from the nipple base, there is a 5 mm enhancing mass, which is probably benign finding with morphology similar to the additional 2 foci of enhancement in the anterior right breast and central left breast.There is no suspicious enhancement in the left breast.No abnormal axillary lymph nodes are identified in either axillary region.
1. Unifocal 1.5 cm cancer in the right breast 3:00 position.2. A probably benign 5 mm enhancing focus medial to the index lesion (referred to as retroareolar mass at outside hospital) in the right breast 3:00 position with morphology similar to the additional enhancing foci in the anterior right breast and central left breast. Six-month follow-up of this 5 mm enhancing mass is recommended.BIRADS: 6 - Known cancer.RECOMMENDATION: 3B - Followup at Short Interval (1-11 Months).