Disease
Duplex Renal System
What is a Duplex Renal System?
A Duplex Renal System, also known as a duplicated collecting system, is a congenital condition where a kidney has two drainage systems (renal pelvis and ureters) instead of one. This means the kidney has two ureters, which may drain separately into the bladder or join together before entering the bladder.
Causes
- It is a developmental anomaly that occurs during fetal growth.
- It is usually not inherited but can run in families in rare cases.
Types
- Complete Duplication: Two separate ureters drain independently into the bladder
- Incomplete Duplication (Partial): The two ureters join before reaching the bladder
Common Symptoms (if symptomatic):
- Recurrent urinary tract infections (UTIs)
- Urinary incontinence (especially in children)
- Hydronephrosis (swelling of the kidney)
- Abdominal or flank pain
Diagnosis
- Ultrasound
- CT Urogram
- Voiding cystourethrogram (VCUG)
- MRI or Nuclear Renal Scan
Treatment Options
- Often, no treatment is needed if the condition is asymptomatic
- In symptomatic cases, treatment may include:
- Antibiotics for UTIs
- Surgical correction (e.g., ureteral reimplantation or heminephrectomy)
