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(A) Histological examination of transbronchial lung biopsy specimens obtained from the right middle pulmonary mass revealing poorly differentiated squamous cell carcinoma.
(B) Immunohistochemical staining of PD-L1 for squamous cell carcinoma revealing higher PD-L1 expression (100% tumor proportion score).
(C) Histological examination of CT-guided biopsy specimens from the right lower pulmonary mass revealing well-differentiated adenocarcinoma.
