| Intravenous pyelography has been the classic diagnostic test of choice. |
| Renal ultrasound examination or intravenous pyelography are carried out on the twelfth day. |
| If necessary, intravenous pyelography, computed tomography or magnetic resonance imaging can add more information. |
| Water-enhanced antegrade MR pyelography through percutaneous nephrostomy is an alternative to fluoroscopic pyelography. |
| Antegrade pyelography, however, requires the use of iodinated contrast medium and ionising radiation exposure. |
| The majority of these cases followed intravenous administration of ionic-contrast medium during intraveonus pyelography. |
