a) The flexible 1.9 mm diameter and 900 mm length cryoprobe, b) connected to the cryotherapy equipment. c) Marks on the distal area of the probe (1 cm between each mark). d) Cryo-transbronchial lung biopsy samples from one of the patients. a) The flexible 1.9 mm diameter and 900 mm length cryoprobe, b) connected to the cryotherapy equipment. c) Marks on the distal area of the probe (1 cm between each mark). d) Cryo-transbronchial lung biopsy samples from one of the patients. Antonio Bango-Álvarez et al. ERJ Open Res 2017;3:00148-2016 ©2017 by European Respiratory Society