Question: how do you do a lung biopsy?
Answer: Needle biopsy. After a local anesthetic is given, the doctor uses a needle that is guided through the chest wall into a suspicious area with computed tomography (CT or CAT scan) or fluoroscopy (a type of X-ray “movie”) to obtain a tissue sample. ... 
Transbronchial biopsy. ... 
Thoracoscopic biopsy. ... 
Open biopsy.