Abstract
CT-guided transthoracic needle biopsy is a common procedure for the evaluation of pulmonary and mediastinal lesions. The most frequent complications include pneumothorax, hemorrhage, and hemoptysis. Air embolism especially cerebral embolism is rare but potentially fatal complication after this procedure. Here, we report a case of cerebral air embolism occurred after CT-guided transthoracic needle biopsy for the peripheral lung mass.