Is distension and dilation of the renal pelvis and calyces, usually caused by obstruction of the free flow of urine from the kidney.
Swelling of the renal pelvis of the kidney with urine due to obstructed outflow.
Accumulation of urine in the renal pelvis caused by obstruction, forming a cyst.
Swelling of the pelvis of a kidney caused by accumulation of water due to infection or a kidney stone blocking the ureter.
Distension of the kidney, caused by accumulation of urine that cannot flow out because of an obstruction (e.g., tumor, calculus stone, edema) of the ureter. Symptoms include pain, high fever, and the presence of blood and pus in the urine. Treatment involves removal of the obstruction in the ureter.
Dilation of the renal pelvis and calyces of one or both kidneys due to mechanical obstruction of the flow of urine by tumor, calculus, or inflammation or obstruction of the prostate or edema.
Dilation or widening of the ureter, kidney, or kidneys caused by total or partial blockage of the urinary tract. As the urine backs up, pressure inside the kidney increases, distending the collecting system. Hydronephrosis may produce no symptoms,, but sometimes continuing or intermittent pain in the abdomen or flank can be symptoms of an obstruction. The condition is usually diagnosed by ultrasound scanning. Hydronephrosis can also occur before birth and is sometimes diagnosed in the fetus.
Distension and dilatation of the pelvis of the kidney. This is due to an obstruction to the free flow of urine from the kidney. An obstruction at or below the neck of the bladder will cause hydronephrosis of both kidneys. In primary pelvic hydronephrosis the obstruction, usually functional, is at the junction of the renal pelvis and ureter. Surgical relief by pyeloplasty is advisable to avoid the back pressure atrophy of the kidney and the complications of infection and stone formation.
Stretching of the renal pelvis as a result of obstruction to urinary outflow.
Intense enlargement of the kidney caused by the accumulation of urine due to an impediment, such as an obstruction, presence of calculi (stones), tumor growth, or other pathological circumstances.
Hydronephrosis is a condition in which a kidney swells up due to urine accumulation resulting from a blockage in the urinary tract. This surplus urine leads to increased pressure inside the kidney, hindering its normal function. Hydronephrosis can impact one or both kidneys.
Hydronephrosis, in some instances, can be attributed to a congenital condition where the ureter is abnormally narrow. Other times, it might be due to a blockage in the ureter, which could stem from a stone, a kidney tumor, or a blood clot. Hydronephrosis may also arise from a blockage to the urine’s exit pathway from the bladder, which can be due to an enlarged prostate gland in males, or from a swollen uterus in expectant women. In these situations, both kidneys are typically impacted.
Acute hydronephrosis involves a sudden ureter blockage, leading to intense abdominal and lower back pain. On the other hand, chronic hydronephrosis, which develops over time due to a gradual blockage, may not present any symptoms until it escalates to complete obstruction, resulting in kidney failure. Hydronephrosis also heightens the likelihood of a kidney infection as bacteria can reproduce more readily in urine that isn’t flowing properly.
The diagnosis of hydronephrosis can be made through the use of X-rays, CT scans, or MRI, all of which are methods capable of generating cross-sectional or three-dimensional visualizations of bodily structures. Once identified, the condition can usually be managed by alleviating pressure, achieved by draining urine through a tube that’s either directed towards the skin surface or circumventing the obstruction. Subsequent treatment will focus on addressing the root cause of the blockage.
In cases where the obstruction can be eliminated surgically, the kidney is expected to return to its normal function. However, there may be instances where the kidney has been severely damaged, necessitating its removal.
The expansion of the kidney caused by the accumulation of urine due to a blockage in its drainage. Over time, if not corrected through a surgical procedure, this can lead to the deterioration of kidney tissue.