Magnetic resonance imaging revealed a normal left kidney and grade III hydronephrosis of both segments of the right duplex kidney with a bifid ureter joining further distal to the kidney. Retrograde pyelography showed obstruction of the right ureter at the level of crossing with the right common iliac artery (RCIA) with the stent in situ. Computed tomography scan demonstrated a totally thrombos...

The purpose of this report is to record several observations made in a study of hydronephrosis produced in rats by unilateral ligation of the ureter. I t has been known from the work of Wilmer (1) and Wachstein (2, 3) that the staining of the proximal tubule brush border for alkaline phosphatase activity is diminished in experimental hydronephrosis. However, the speed with which this decrease o...

The term hydronephrosis denotes a condition of dilatation of the collecting system of the kidney above the level of the pelvi-ureteric junction. It acquires clinical significance by being classified according to the site and pathology of any obstruction to urine flow, but the descriptive groups so formed are unsatisfactory and not fully comprehensive. A review of the physiological processes inv...