Fig. 4From: Breast metastasis of pulmonary pleomorphic carcinoma: a case reportHistology of the breast tumor. a Hematoxylin and eosin stain, ×200. The histologic appearances of breast tumor are similar to those of the lung tumor. b AE1/AE3 immunohistochemistry, ×200. AE1/AE3-positive tumor cells are scattered. c ER immunohistochemistry, ×200. There are no ER-positive tumor cellsBack to article page