Nondilated obstructive uropathy: percutaneous nephrostomy performed to reverse renal failure

Area of Science:

• Nephrology
• Urology
• Radiology

Background:

• Ureteral obstruction is a common cause of acute kidney injury.
• Standard imaging techniques like computed tomography (CT) and ultrasonography (US) may fail to detect obstruction.
• This diagnostic challenge can delay crucial interventions for renal failure.

Observation:

• Seven patients presented with clinical signs of ureteral obstruction and subsequent renal failure.
• Initial CT and US scans did not reveal significant dilatation of the collecting system or ureter.
• These patients underwent percutaneous nephrostomy (PCN) for evaluation and management.

Findings:

• Percutaneous nephrostomy (PCN) facilitated brisk diuresis in all seven patients.
• Renal function significantly improved post-PCN, indicating reversal of obstruction.
• Antegrade urograms obtained during PCN confirmed the level of obstruction with minimal or absent proximal dilatation.

Implications:

• Percutaneous nephrostomy (PCN) is a valuable tool for diagnosing and managing ureteral obstruction when imaging is inconclusive.
• Early consideration of PCN is essential for patients with suspected obstructive uropathy and declining renal function.
• This approach can prevent irreversible renal damage and improve patient outcomes.