EGFR and non-small cell lung carcinoma: A 75-year-old non-smoking female with stage IV EGFR exon 19 deletion NSCLC lung adenocarcinoma (baseline imaging [11 September 2023]: Figure 1A) presented on 28 December 2023 with acute fever, debilitating dyspnea at rest (mMRC grade 4), dry cough, and anorexia 12 days after osimertinib discontinuation (80 mg/day for 1 month).