Thoracoscopy is a medical procedure that allows doctors to look inside the chest cavity and lungs using a thin tube with a small camera called a thoracoscope. It helps in checking for lung problems, infections, or abnormal growths, and doctors can also take small tissue samples (biopsies) if needed. The procedure is usually done under local or general anesthesia, is minimally invasive, and provides a safe and effective way to diagnose and treat chest conditions.