<procedure> Formation of an opening into the kidney pelvis to establish urinary drainage. ... Origin: pyelo-+ G. Stoma, mouth ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
(pi″ә-los´tә-me) the operation of forming an opening in the renal pelvis in order to temporarily divert the urine from the ureter. Found on http://www.encyclo.co.uk/local/21001