Fig. 1

a Thorax computed tomography scan showing a mass in the posterior mediastinum that compresses the left main bronchus and infiltrates the aorta with obstruction greater than 50%. b Positron emission tomography-computed tomography scan showing hypermetabolic lesion that compresses the left main bronchus and infiltrates the aorta. c Endobronchial ultrasound showing a rounded lesion adjacent to the left main bronchus. d Image of the real-time fine needle puncture of the tumor for sampling