What are ureteral valves?
Disease description:
Recently, I haven't done anything strenuous, yet I always feel aching and pain in my lower back. After visiting the hospital, I was diagnosed with ureteral valves. I would like to understand what ureteral valves are.
Doctor's answer (1)
Dr. Cao Zhiqiang
Ureteral valves are a rare congenital urinary tract anomaly, primarily occurring within the ureter. They are characterized by a transverse mucosal fold on the ureteral wall that protrudes into the ureteral lumen. In most cases, these valves are located within 3 cm of the vesicoureteral junction.
Under normal conditions, urine should flow in a single direction, from the kidneys to the bladder. In the presence of ureteral valves, additional tissue structures resembling valves develop within the ureter, which can obstruct the normal flow of urine, leading to urine reflux or accumulation within the ureter. This increases the risk of urinary tract infections, hydronephrosis, and renal function impairment.
The presence of ureteral valves may cause proximal ureteral dilation, further resulting in urinary tract obstruction, most commonly manifested as lower urinary tract hydroureter. Patients may experience symptoms such as low back pain and discomfort. If accompanied by infection, it may also induce pyelonephritis.
