A Pediatric Radiology Textbook and Pediatric Radiology Digital Library
Pediatric Gynecomastia
Etiology: Imbalance between estrogen action relative to androgen action at the breast tissue level leads to benign ductal and stromal proliferation in a central location underneath the nipple resulting in an excess of male breast tissue
Imaging US: Unilateral, retroareolar, hypoechoic mass
DDX:
Complications:
Treatment: Usually reversible on its own
Clinical: Presents with palpable, firm, mobile breast mass
Radiology Cases of Gynecomastia
Transverse US of the right breast (left) shows a retroaerolar, primary hypoechoic mass in the subcutaneous breast tissue. A transverse US of the same area in the normal left breast (right) is provided for comparison.Transverse (above left) and sagittal (above right) US of the left breast along with transverse (below left) and sagittal (below right) US of the right breast show bilaterally there to be retroareolar subcutaneous lesions containing multiple small cysts. The lesions had some increased flow on color doppler US (not provided).
