Pseudomesotheliomatous carcinoma of lung adenocarcinoma diagnosed using transesophageal ultrasound‐guided bronchoscopic aspiration

Endoscopic ultrasound with bronchoscope‐guided fine‐needle aspiration (EUS‐B‐FNA), a minimally invasive procedure, may be useful for the diagnosis of pseudomesotheliomatous (PMC) carcinoma because a sufficient amount of tissue can be obtained for diagnosis. This is the first report of PMC diagnosed using EUS‐B‐FNA. Our findings suggest that EUS‐B‐FNA may reduce the risk of dissemination for PMC.