"Gastroscopy"^^ . _:b676607 . . "Gastroscopy"^^ . . "GastroscopyPTNCI" . "C16604"^^ . . _:b676607 . "Gastroscopy"^^ . "Examination of the inside of the stomach using an endoscope, passed through the mouth and esophagus. An endoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue to be checked under a microscope for signs of disease.NCI-GLOSS" . "upper endoscopyPTNCI-GLOSSCDR0000470253" . "C0017195"^^ . "gastroscopyPTNCI-GLOSSCDR0000046389" . _:b676607 . _:b676607 . "Endoscopic examination of the stomach.NCI" . "Health Care Activity"^^ .