[en] We encountered a patient with a breast mass which had metastasized from gastric carcinoma representing as an inflammatory carcinoma on ultrasonography. We described the radiologic and clinical features, and review the literature. The patient had advanced gastric carcinoma and breast ultrasonography demonstrated the presence of very ill-defined, infiltrating, and mixed echoic lesions indistinguishable from findings of primary inflammatory breast carcinoma. Metastatic gastric adenocarcinoma was confirmed pathologically. (author). 8 refs. confirmed pathologically. (author). 8 refs