What is a VPL Shunt and what does it do?

This is a device which drains the extra fluid in the brain into the pleural cavity. This cavity is a space between the chest wall and the lungs. It is lined by a membrane along the chest wall (parietal pleura membrane) and the lung surface (visceral pleura membrane) with pleural fluid in between. The cerebral spinal fluid is added to this fluid and is absorbed.