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Breast US in Children and Adolescents1

Cristián J. García, MD, Aníbal Espinoza, MD, Víctor Dinamarca, MD, Oscar Navarro, MD, Alan Daneman, MD, Hernán García, MD and Andreina Cattani, MD

1 From the Department of Radiology, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, Santiago, Chile (C.J.G., V.D., A.C.); the Departments of Radiology and Pediatrics, Hospital San Borja-Arriaran, University of Chile, Santiago (A.E., H.G.); and the Department of Diagnostic Imaging, Hospital for Sick Children, Toronto, Ontario, Canada (O.N., A.D.). Presented as a scientific exhibit at the 1999 RSNA scientific assembly. Received April 25, 2000; revision requested May 19; revision received and accepted July 10. Address correspondence to C.J.G. (e-mail: famgarc@entelchile.net).



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  		Figure 1.   Tanner stage I. In a 7-year-old healthy girl, US scan shows ill-defined hyperechoic retroareolar tissue (arrows).

 


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  		Figure 2.   Tanner stage II. In a 10-year-old healthy girl, US scan shows a hyperechoic retroareolar nodule (arrows) with a central hypoechoic area (*) that represents mostly simple branched ducts.

 


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  		Figure 3.   Tanner stage III. In a 13-year-old healthy girl, US scan shows hyperechoic glandular tissue extending away from the retroareolar area (arrows) and a central spider-shaped hypoechoic retroareolar region (*).

 


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  		Figure 4. Tanner stage IV. In a 14-year-old healthy girl, US scan shows hyperechoic fibroglandular periareolar tissue (arrows), with a prominent central retroareolar hypoechoic nodule (*). Subcutaneous adipose tissue is also depicted.

 


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  		Figure 5.   Tanner stage V. In a 14-year-old healthy girl, US scan shows hyperechoic glandular tissue, with increased subcutaneous adipose tissue anteriorly and without the hypoechoic central nodule seen in previous Tanner stages.

 


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  		Figure 6a.   In a 7-year-old girl with unilateral thelarche, US scans show Tanner stage II development (arrows) in the right breast (a) and a small hyperechoic retroareolar area (arrows) in the left breast region (Tanner stage I) (b).

 


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  		Figure 6b.   In a 7-year-old girl with unilateral thelarche, US scans show Tanner stage II development (arrows) in the right breast (a) and a small hyperechoic retroareolar area (arrows) in the left breast region (Tanner stage I) (b).

 


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  		Figure 7a.   Asymmetric pubertal gynecomastia in a 16-year-old boy with a clinically suspected right breast mass. US scan shows bilateral breast development (arrows) that is much more pronounced on the right side (a) than on the left (b).

 


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  		Figure 7b.   Asymmetric pubertal gynecomastia in a 16-year-old boy with a clinically suspected right breast mass. US scan shows bilateral breast development (arrows) that is much more pronounced on the right side (a) than on the left (b).

 


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  		Figure 8.   Pseudogynecomastia in an obese 14-year-old boy. US scan shows adipose tissue accumulation in the breast region.

 


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  		Figure 9.   Breast abscess in a 2-month old female infant. US scan shows a complex breast mass (cursors) with some debris (arrows) in it.

 


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  		Figure 10.   Fibroadenoma in a 13-year-old girl. US scan shows a well-defined hypoechoic breast mass.

 


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  		Figure 11.   Breast cysts in a 14-year-old girl. US scan shows small well-defined retroareolar cysts (arrows).

 


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  		Figure 12.   Infected retroareolar cyst in an 11-year-old girl with a breast mass and fever. Doppler US scan shows a predominantly cystic lesion (arrowheads), with increased peripheral flow.

 


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  		Figure 13.   Breast hematoma in a 1-year-old boy after breast trauma. US scan shows a well-defined and complex posttraumatic breast mass (arrows).

 


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  		Figure 14.   Metastatic leukemia in a 15-month-old girl. US scan shows a moderately hypoechoic, well-defined breast mass (arrows).

 




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