Fig. 4.

Displacement of needle tip due to respiratory movement in lower lobe lesion.

A. Axial high resolution CT image of 72-year-old man shows irregular fissure based lesion in right lower lobe. B. Guiding needle was seen placed inside lesion. C. Subsequent scan showed that needle tip has slipped out of lesion due to excessive respiratory movement and lying in pleural space (black arrow). Presence of pneumothorax was also noted (arrowheads). D. Biopsy was completed after observing stable nature of pneumothorax.