Rigid instruments for medical thoracoscopy: a) trocar and cannula with valve; b) single-incision thoracoscope (9-mm diameter); c) biopsy forceps with straight optics; d) magnification of optics and forceps in the thoracoscope shaft ready for biopsy. Rigid instruments for medical thoracoscopy: a) trocar and cannula with valve; b) single-incision thoracoscope (9-mm diameter); c) biopsy forceps with straight optics; d) magnification of optics and forceps in the thoracoscope shaft ready for biopsy. Reproduced from [7], with permission from the publisher. R. Loddenkemper et al. breathe 2011;8:156-167 ©2011 by European Respiratory Society