Q62.1

Clinical Causes: Developmental abnormalities during fetal growth leading to atresia (absence or closure of the ureter opening) Congenital stenosis of the ureter which causes narrowing and impedes urine flow Genetic factors influencing urinary tract formation Associated congenital syndromes or anomalies affecting the urinary system

Key Symptoms: Recurrent urinary tract infections Flank or abdominal pain, often on the affected side Hematuria (blood in the urine) Decreased urine output or urinary retention Swelling or distension of the abdomen due to fluid buildup In some cases, no symptoms are present in early stages

Diagnosis Path: Diagnosis typically involves a combination of imaging studies and clinical assessments. These may include: - Ultrasound: to visualize kidney and ureter abnormalities - Voiding cystourethrogram (VCUG): to assess urine flow and detect obstructions - Intravenous pyelogram (IVP): an X-ray study showing the urinary tract - Magnetic Resonance Urography (MRU): detailed imaging for structural assessment - Renal function tests: to evaluate kidney performance Early detection often occurs prenatally through ultrasound, especially if there are signs of urinary tract dilation. Postnatal diagnosis occurs when symptoms arise or incidental findings prompt further investigation.

Treatment Protocols: Management strategies depend on the severity and impact of the ureteral occlusion. Treatment options include: - Surgical reconstruction or reimplantation of the ureter to restore normal urine flow - Ureteral dilation procedures to widen stenotic areas - Nephrostomy or urinary diversion in severe cases to temporarily bypass the obstruction - Long-term follow-up with imaging to monitor kidney function and detect any recurrence or complications - Supportive care, including antibiotics for urinary tract infections The goal of treatment is to preserve kidney function, eliminate urinary infections, and maintain normal urinary flow.