Nonfatal air embolism complicating percutaneous CT-guided lung biopsy and VATS marking: Four cases from a single institution.

Systemic air emboli occur as a rare complication of percutaneous needle biopsy of the lung and video-assisted thoracoscopic surgery (VATS) marking. Here we present four cases of systemic air emboli from single institution and the imaging findings and embolism' kinetics using contrast-enhanced media during VATS color marking with indocyanine green. We suggest that early detection using routine whole-lung CT is required for asymptomatic patients with abnormal air. If abnormal air is found, we should keep the patient to the appropriate posture in order to prevent moving the air until it dissipates. Early detection of abnormal air can prevent severe complications.