Conservative treatment in primary neonatal megaureter

Area of Science:

• Pediatric Urology
• Neonatal Surgery
• Diagnostic Imaging

Background:

• Primary megaureter is a congenital condition affecting the ureter.
• Prenatal diagnosis is common, with neonatal screening also identifying cases.
• The study focuses on the management and outcomes of primary megaureter in neonates.

Purpose of the Study:

• To evaluate the clinical experience with primary megaureter in a cohort of neonates.
• To assess the effectiveness of different management strategies, including conservative and surgical approaches.
• To analyze the long-term outcomes and renal function in neonates with primary megaureter.

Main Methods:

• Retrospective review of 22 neonates diagnosed with primary megaureter.
• Diagnostic imaging included intravenous urography and radionuclide scans (Tc99m DTPA, diuretic renal scan).
• Management strategies involved antibiotic prophylaxis, conservative treatment, and surgical intervention based on obstruction and severity.

Main Results:

• 18 of 22 neonates had prenatal diagnosis; 4 were identified via neonatal screening.
• Intravenous urography showed Type I, II, and III dilatation in 8.3%, 37.5%, and 54.2% of renal units, respectively.
• 83% of cases were non-obstructing; 17 patients were managed conservatively with spontaneous resolution or significant reduction in 11 cases. Surgery was performed on 4 patients (2 obstructed, 2 severe non-obstructing).
• Renal function remained stable in all patients throughout the follow-up period (18-54 months).

Conclusions:

• Primary megaureter in neonates often presents with stable renal function and a high rate of spontaneous resolution or improvement with conservative management.
• Surgical intervention is indicated for obstructed cases and selected severe non-obstructing megaureters.
• Long-term renal function is generally preserved in neonates with primary megaureter, regardless of management approach.