"Removal of tissue from the pylorus for microscopic examination, using an endoscope.NCI" . "Diagnostic Procedure"^^ . "Biopsy_of_Pylorus"^^ . . _:b650505 . "Pyloric BiopsySYNCI" . "Biopsy of Pylorus"^^ . _:b650505 . _:b650505 . "C51584"^^ . _:b650505 . "Biopsy of Pylorus"^^ . "C0577780"^^ . "Biopsy of PylorusPTNCI" . .