EGFR and small cell lung carcinoma: utilised 10X Visium on 10 samples of EGFR‐mutant lung adenocarcinoma (LUAD), including two never‐transformed LUAD samples (LUAD‐NT), three LUAD samples collected before transformation (LUAD‐BT), three small cell lung cancer samples after transformation (SCLC‐AT) and two primary SCLC samples (SCLC‐P).