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(a) Chest CT scans show the primary tumor before operation. (b) Hematoxylin–eosin staining of surgical specimens show pulmonary pleomorphic carcinoma with spindle cells and giant cells (scale bars 50 μm). (c) Immunohistochemical staining of PD-L1 from surgical specimens show PD-L1 TPS 75%. PD-L1 expression of spindle cells and giant cells was positive (scale bars 50 μm)
