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A radiograph or series of radiographs of the renal pelvis and ureter, following injection of contrast medium.
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py·elo·gram 'pī-(ə-)lə-.gram n a radiograph made by pyelography
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n.
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py·elo·gram (piґə-lo-gram) [pyelo- + -gram] a radiograph of the kidney and ureter, especially one showing the renal pelvis.Medical dictionary. 2011.