Kidney Stones Cause Hydronephrosis. Some cases can be resolved without surgery. A kidney stone can pass through by itself or might be severe enough to require removal with surgery.
Hydronephrosis causes hydronephrosis occurs due to blockage of the outflow of urine from the kidney to the bladder leading to kidney distension. This swelling most commonly affects only one kidney. Stones that may become lodged in the kidneys or urinary tract.
In adults the conditions that most often cause hydronephrosis include.
Urine flowing the wrong way makes it difficult for the kidney to empty properly and causes the kidney to swell. Tumors in the bladder prostate gland uterus or other organs that are part of or near the urinary tract may cause blockages that disrupt the flow of urine. Urine flowing the wrong way makes it difficult for the kidney to empty properly and causes the kidney to swell. Hydronephrosis is a condition that puts pressure on the kidneys and can lead to them becoming damaged.