Target sign of a normal intramammary lymph node
Screening ultrasound of the breast
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The sonographic examination shows a target image (arrows), the echogenic center is surrounded by hypoechoic ring and the outer margin is well defined.
The echogenic center is the hilum showing entering vessels by color Doppler, and the hypoechoic ring is the cortex of a normal intramammary lymph node, surrounded by breast tissue.