19-year-old male with known left gynecomastia presents for follow-up exam With physical examination, there is a thickening of tissue behind the nipple in the left breast. Focused ultrasound shows the same amount of breast tissue behind the nipple as seen on the previous study, consistent with gynecomastia. No solid or cystic lesions are seen in the left breast. For comparison ultrasound for the right retroareolar region is performed. In the right retroareolar region, there is small amount of normal breast tissue, consistent with gynecomastia.
Ultrasound findings are consistent with gynecomastia, left greater than right. No sonographic evidence for malignancy. BIRADS: 2 - Benign finding.RECOMMENDATION: C - Clinical Correlation Needed.