Subsequent pathology results from a CT‐guided biopsy confirmed adenocarcinoma, and immunohistochemical (IHC) staining results were as follows: cytokeratin (CK) (+); CK5/6 (−); P40 (−); thyroid transcription factor (TTF‐1) (+); programmed cell death 1 (PD‐1) (5%+); programmed cell death 1 ligand 1 (PD‐L1) (80%+); Ki‐67 (70%+); CK20 (−); CK7 (+); villin (−); and Satb2 (−). The gene discussed is TTF1; the disease is adenocarcinoma.