A case of esophageal squamous cell carcinoma metastatic to the breast
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Metastasis to the breast from extramammary malignancies is rare. There are especially few reports of metastasis from esophageal cancer. We report the pathological and autopsy findings of a 44-year-old man with advanced esophageal cancer and a left breast tumor. Squamous cell carcinoma invading the mammary glands was demonstrated histologically. Immunostains for ER, PgR, and ErbB-2 were negative. At autopsy, metastatic lesions were found in lung, liver, diaphragm, peritoneum, spine, and mediastinal lymph nodes, with no evidence of metastasis to the skin. While metastatic breast tumors are rarely the initial sign of malignancy, it is important to distinguish a metastasis from primary breast cancer to avoid unnecessary conflicting treatments.
KeywordsMetastatic breast tumor Esophageal squamous cell carcinoma
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