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Metastases to the breast from extramammary malignancies—sonographic features

✍ Scribed by Ji Hye Lee; Sung Hun Kim; Bong Joo Kang; Eun Suk Cha; Hyun Suk Kim; Jae Jeong Choi

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
487 KB
Volume
39
Category
Article
ISSN
0091-2751

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✦ Synopsis

Abstract

Purpose.

To evaluate the clinical and sonographic (US) features of metastatic tumors from extramammary malignancies to the breast.

Methods.

This study included 23 patients with pathologically proven metastases in the breast. Two radiologists retrospectively analyzed the images from US (n = 23), mammography (n = 11), and MRI (n = 5) examinations according to BIRADS.

Results.

Patients presented with a palpable mass or diffuse breast swelling (21/23) or were asymptomatic (2/23). Eighteen patients had solitary or multiple breast masses on US. The common US finding was an ovoid hypoechoic mass with a noncircumscribed margin. The final assessment categories were BIRADS 3 (probably benign finding) in 6 cases (25%) and BIRADS 4 (suspicious abnormality) in 18 cases (75%). In five patients, US displayed a diffuse infiltrative pattern without a focal lesion, which was categorized as BIRADS 4.

Conclusions.

Metastatic tumors in the breast have a wide range of sonographic appearances, with some resembling benign lesions. Any newly developed mass in a patient with a known history of extramammary malignancy, even with a probably benign US appearance, should undergo biopsy for pathologic confirmation. © 2011 Wiley Periodicals, Inc. J Clin Ultrasound, 2011

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