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Renal sinus hyperechogenicity in acute pyelonephritis: description and pathological correlation
J N Dacher1, F Avni, A François
1Department of Pediatric Radiology, Hôpital Charles Nicolle, Rouen, France.
Pediatric Radiology
|April 14, 1999
Summary
Renal sinus hyperechogenicity on ultrasound is a key indicator of acute pyelonephritis in children. This finding can aid diagnosis, potentially reducing the need for advanced imaging like CT scans.
Area of Science:
- Pediatric Nephrology
- Medical Imaging
- Renal Pathology
Background:
- Acute pyelonephritis is a serious kidney infection.
- Accurate and timely diagnosis is crucial for preventing renal damage.
- Current diagnostic methods may involve invasive or radiation-exposing procedures.
Purpose of the Study:
- To investigate the association between renal sinus hyperechogenicity and acute pyelonephritis in children.
- To identify sonographic features associated with this condition.
- To evaluate the potential of renal sinus hyperechogenicity as a diagnostic marker.
Main Methods:
- Retrospective analysis of medical records and imaging studies of 18 children with renal sinus hyperechogenicity.
- Detailed sonographic evaluation, including color/power Doppler.
- Histopathological correlation in an animal model of pyelonephritis.
Main Results:
- Renal sinus hyperechogenicity was associated with acute pyelonephritis in children.
- Renal pelvis thickening and renal enlargement were common co-occurring sonographic findings.
- Histological examination in rabbits revealed exudates, edema, and micro-abscesses contributing to hyperechogenicity.
Conclusions:
- Renal sinus hyperechogenicity is a valuable sonographic sign for diagnosing acute pyelonephritis in pediatric patients.
- Identification of subtle sonographic findings can improve diagnostic accuracy.
- This ultrasound marker may reduce reliance on contrast-enhanced CT or scintigraphy.