63 year old female who was recalled from screening mammogram for incompletely characterized mass in the left superior breast. Mammogram: An ML view and two spot compression views of the left breast were performed digitally and reviewed with the aid of R2 CAD 9.3. The breast parenchyma is almost entirely fatty(BiRads Density Category A), unchanged in pattern and distribution. 5 mm round circumscribed mass with lucency in the center most likely represents a benign intramammary lymph node.Ultrasound: Targeted left upper-outer quadrant ultrasound was performed. Benign morphology 5 x 4 mm hypoechoic mass is identified in the left breast 1:00 position without definite peripheral blood flow which could represent a complex cyst or a benign intramammary lymph node with central fatty hilum. No suspicious cystic or solid mass noted.
Benign morphology subcentimeter mass in the left breast most likely represents a complex cyst or a benign intramammary lymph node. No mammographic evidence of malignancy. As long as the patient's physical examination remains normal, bilateral screening mammogram is recommended annually. Results and recommendation were discussed with the patient.BIRADS: 2 - Benign finding.RECOMMENDATION: NS - Screening Mammogram.