Fig. 3

Endobronchial ultrasound-guided transbronchial cryobiopsy (EBUS-cryobiopsy) procedure images. a The anterior mediastinal mass was visualized by EBUS with reference to the locations of the brachiocephalic and left common carotid arteries. b A small tract was made in the tracheal wall while sampling with EBUS-guided transbronchial needle aspiration using a 22-gauge needle. c EBUS-cryobiopsy was performed by inserting a cryoprobe with a diameter of 1.7 mm (arrow) into the lesion through the created tract