Interstitial nephritis: Two pediatric cases with atypical radiological features.

Area of Science:

• Pediatric Nephrology
• Renal Pathology
• Medical Imaging

Background:

• Interstitial nephritis (IN) is an uncommon pediatric kidney disease with diverse causes like infections, medications, and autoimmune conditions.
• Current therapeutic options for IN remain limited, posing significant challenges in management.
• This study focuses on rare cases of IN presenting with atypical sonographic findings in pediatric patients.

Observation:

• Two pediatric cases of biopsy-proven interstitial nephritis were analyzed.
• One case exhibited granulomatous features and unique bilateral renal mass-like lesions on ultrasound.
• The other case presented with distinct, albeit less common, sonographic abnormalities.

Findings:

• Despite thorough investigation, the specific etiology of IN could not be determined in either case.
• One patient with atypical IN developed end-stage kidney disease (ESKD).
• The second patient is undergoing initial treatment for IN.

Implications:

• Atypical sonographic findings in pediatric IN can mimic neoplastic or infectious processes, potentially delaying diagnosis.
• Early recognition of these unusual imaging features is crucial for timely intervention and management.
• Further research into the imaging characteristics of pediatric IN may improve diagnostic accuracy and patient outcomes.