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Anterograde pyelography is the procedure used to visualize the upper collecting system of the urinary tract, i.e., kidney and ureter. It is done in cases where excretory or retrograde pyelogaphy has failed or contraindicated,or when there is nephrostomy tube is in place or delineation of upper tract is desired. It is commonly used to diagnose upper tract obstruction, Hydronephrosis, Ureteropelvic junction obstruction. In this, radiocontrast dye is injected into the renal pelvis and X-rays are taken. It provides detailed anatomy of the upper collecting system. As it is an invasive procedure, it is chosen when other non-invasive tests are non confirmatory or contraindicated and patient monitoring is required prior and after the procedure. 〔(【引用サイトリンク】title=Antegrade Pyelogram )〕 〔(【引用サイトリンク】title=Antegrade Pyelography )〕 〔(【引用サイトリンク】title=Antegrade Pyelogram )〕 ==References== * * * * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Anterograde pyelography」の詳細全文を読む スポンサード リンク
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