Metastases to the breast from extramammary malignancies—sonographic features

Abstract

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.

<p>Metastases to the Breast from Extramammary Nonhematological Malignancies: Case Series</p>

“…Metastasis may show single or multiple and unilateral or bilateral lesions. 11,14 In this study, a single and unilateral breast mass from non-breast metastatic disease are more prevalent and masses are more common than diffused infiltrative lesions. The mass was located in the left breast in most cases.…”

“…The common manifestations of ultrasonography were round to oval shaped, well-defined hypoechoic solid masses. 11,[14][15][16][17][18] Some of our results were different. The sonogram of breast masses is more common with irregular shape and unclear boundaries (13/14).…”

“…The symptom of peaud'orange, nipple retraction, or nipple discharge is uncommon. 8,[11][12][13][14] Most breast metastatic masses grow rapidly and close to the skin, which may induce skin edema or erythema. This manifestation can often be mistaken for inflammatory breast cancer.…”

Breast Metastasis from Gastric Cancer Mimicking Benign Breast Mass

“…The common symptoms in all reported cases of breast metastases, including from gastric cancer, are a non-tender palpable mass, diffuse edema of the skin, or erythema. However the radiologic features of secondary breast malignancies tend to indicate a benign tumor [2,3].…”

Intramammary Metastasis in a Patient with a History of Renal Cell Carcinoma: A Case Report

“…To date, reports have indicated that intramammary metastases in general are often round, firm, and not accompanied by pain. Distinguishing intramammary metastases from benign tumors (e.g., fibroadenoma, hamartoma, and phyllodes tumors) and breast cancer (e.g., medullary cancer, mucinous carcinoma, and solid tubular carcinoma) is clinically problematic because of similar form and properties [ 3 ].…”