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Obstruction of Urine Flow from Kidneys

Urine is formed in the kidneys and flows down through thin tubes called ureters where it is temporarily stored in the bladder before being excreted outside. The obstruction of urine flow from the kidneys is associated with two conditions: ureteropelvic junction obstruction and hydronephrosis.

Ureteropelvic junction obstruction

Ureteropelvic junction (UPJ) obstruction is a blockageat the renal pelvis (funnel-shaped part of the ureter extending from the kidney). This blockage prevents the flow of urine from the kidney to the bladder. UPJ obstruction is a congenital condition, which can occur when a part of the ureter does not contract completely, or when a blood vessel crosses and causes a bend in the ureter. Symptoms of UPJ obstruction include recurring urinary tract infections, abdominal mass, kidney stones, blood in the urine, pain in the lower back or sides and high blood pressure.

Your child’s doctor may order an ultrasound or CT scan to determine the cause for the obstruction. Some cases of UPJ obstruction resolve on its own by the age of 18 months. Surgery may be performed to remove the obstruction and stitch up the cut ends of the ureter or widen the constricted area.

Hydronephrosis and hydroureter

Hydronephrosisis is a condition characterized by the swelling of the kidneys due to the backflow and overfilling of urine in the kidneys. Hydroureter is defined as the stretching of the ureters. These are commonly caused by blockages in the urinary tract. The symptoms include urinary tract infections, blood in urine, pain at the sides or abdomen, nausea, vomiting and fever. Your child’s doctor will diagnose hydronephrosis by observing the symptoms and conducting an ultrasound scan.

Mild forms of the condition are kept under observation or managed with antibiotic medication. However, more serious cases may increase the risk of kidney damage and high blood pressure; so surgery is usually recommended to remove the constriction or blockage, and drain urine from the kidneys.

NMC UroCare provides specialized and experienced urologists and the best quality treatments. For further information regarding Obstruction of Urine Flow from the Kidneys, please contact NMC UroCare.