Fig. 2From: Radial probe endobronchial ultrasound using a guide sheath for peripheral lung lesions in beginnersA patient who developed pneumothorax after the procedure.a A patient was admitted with a peripheral lung nodule measuring 15.1Â mm at its greatest diameter and located in the right upper lobe, as seen on a chest computed tomography scan. b A radial probe endobronchial ultrasound (EBUS) image showed a hypoechoic area (white arrow) distinguishable from the normal aerated lung. c Under fluoroscopic guidance, transbronchial lung biopsy and brush cytology were performed via the guide sheath (GS). The diagnosis was adenocarcinoma. d Iatrogenic pneumothorax (black arrow) was identified on chest radiographs taken 4Â h after EBUS-GSBack to article page