NierenbeckenHarnleiterStenose

NierenbeckenHarnleiterStenose refers to a narrowing of the junction where the renal pelvis, the funnel-shaped structure that collects urine from the kidney, meets the ureter, the tube that carries urine to the bladder. This condition can be congenital, meaning it is present at birth, or acquired due to factors such as kidney stones, inflammation, tumors, or surgical interventions.

The primary consequence of a NierenbeckenHarnleiterStenose is the obstruction of urine flow from the kidney to the bladder. This backup of urine can lead to increased pressure within the renal pelvis, causing hydronephrosis, which is the swelling of the kidney. Symptoms may include flank pain, blood in the urine, recurrent urinary tract infections, and, in severe cases, impaired kidney function. Diagnosis typically involves imaging techniques such as ultrasound, CT scans, or intravenous pyelography. Treatment depends on the severity of the stenosis and the underlying cause. Mild cases may be managed conservatively, while more significant obstructions often require surgical intervention. This can involve minimally invasive procedures like balloon dilation or stent placement, or more extensive open surgery to remove the narrowed segment and reconstruct the junction. Early diagnosis and treatment are crucial to prevent long-term kidney damage.