Hydronephrosis

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Hydronephrosis. Courtesy of T. Scase University of Cambridge
  • Obstruction of the urinary tract anywhere between the renal pelvis and urethra can lead to hydronephrosis.
  • Continued back pressure along with the persistence of glomerular filtration leads to the development of ischaemic lesions and pressure atrophy of the tubules.
  • Dilatation of the renal pelvis and calyces occurs.