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J Ultrasound Med. 2014 Nov;33(11):1879-84. doi: 10.7863/ultra.33.11.1879.

Sonographic appearances of juvenile fibroadenoma of the breast.

Author information

1
Department of Radiology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea (S.J.K., K.H.L., O.H.K., J.H.R., G.B.C.); and Departments of Radiology (Y.M.P., S.J.L., H.J.C., H.W.J.) and Pathology (S.J.J.), Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
2
Department of Radiology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea (S.J.K., K.H.L., O.H.K., J.H.R., G.B.C.); and Departments of Radiology (Y.M.P., S.J.L., H.J.C., H.W.J.) and Pathology (S.J.J.), Busan Paik Hospital, Inje University College of Medicine, Busan, Korea. pymrad@yahoo.co.kr.

Abstract

OBJECTIVES:

The purpose of this study was to evaluate characteristic features of juvenile fibroadenoma of the breast on sonography.

METHODS:

Our study included 34 juvenile fibroadenomas confirmed by surgical biopsy or sonographically guided 8-gauge vacuum-assisted biopsy in 23 patients (age range, 15-47 years; mean age, 25 years). Sonographic findings of the lesions were analyzed retrospectively by 2 radiologists in consensus according to the American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) lexicon. The BI-RADS final assessment category was also established.

RESULTS:

On sonography, all fibroadenomas presented as masses. The mean size was 30 mm. Regarding shape, there were 29 oval, 2 round, and 3 irregular masses. The margins were circumscribed in 24, indistinct in 5, microlobulated in 4, and angular in 1. Regarding echogenicity, 16 masses were hypoechoic, 16 isoechoic, and 2 complex echoic. Posterior acoustic characteristics included posterior acoustic enhancement in 22 masses (65%), posterior shadowing in 1, and no posterior acoustic features in 9; this information was not available in 2. The lesion boundary presented as an abrupt interface in 32 and an echogenic halo in 2. The orientation was parallel in 32 and nonparallel in 2. Calcifications were present in 3 cases and absent in 31. On color Doppler sonography, the masses were usually hypervascular with vessel counts of 5 or more (87%). The BI-RADS final assessment categories were 3 in 24 and 4a in 10.

CONCLUSIONS:

The dominant sonographic presentation of juvenile fibroadenoma is a circumscribed oval hypoechoic or isoechoic mass, which resembles that of simple fibroadenoma. Juvenile fibroadenomas frequently show posterior acoustic enhancement and hypervascularity on color Doppler sonography.

KEYWORDS:

breast; breast ultrasound; fibroadenoma; juvenile fibroadenoma; sonography

PMID:
25336474
DOI:
10.7863/ultra.33.11.1879
[Indexed for MEDLINE]

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