Welcome to the Endoscopy Unit. The Endoscopy Unit is part of the Center for Specialized Services of the National Kidney and Transplant Institute. The Endoscopy Unit provides a comprehensive gastrointestinal and pulmonary endoscopy services with the use of flexible fiberoptics for direct visualization, and digitally enhanced examination, of the gastrointestinal tract, the biliary tract, and the lungs. It provides an extensive line of diagnostic and therapeutic endoscopic procedures which may be done either on an out-patient or on an in-patient basis. All gastrointestinal endoscopic procedures are done by board certified (Philippine Society of Digestive Endoscopy) endoscopists.