Figure 1.

(a) Chest computed tomography revealed a heterogeneous mass in the superior lobe of the right lung and pleural effusion in the right hemithorax. (b) The tumor was enhanced, compressing the adjacent superior vena cava. (c) Fiberoptic bronchoscopy showed a neoplasm in the anterior segment of the right upper lobe involving the opening of the apical segments. (d) Endobronchial ultrasonography showed an abnormally low echo signal next to the front wall of the right main bronchus, upon which endobronchial ultrasound‐guided transbronchial needle aspiration sampling was performed.