Since it is difficult to obtain tumor tissue via airway observation for lung cancer patients with a poor respiratory condition, endoscopic ultrasound with bronchoscope-guided fine-needle-aspiration (EUS-B-FNA), a transesophageal procedure, is effective for such patients. We herein report three patients with driver oncogenes taken to the emergency department because of lung cancer-related symptoms. EUS-B-FNA was performed because of the patients' poor respiratory conditions to detect driver oncogenes. The general conditions improved, and the patients achieved a long-term survival with tyrosine kinase inhibitors. Our findings suggest that EUS-B-FNA should be considered to detect driver oncogenes in lung cancer patients despite poor respiratory conditions in emergency departments.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8079917PMC
http://dx.doi.org/10.2169/internalmedicine.5594-20DOI Listing

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