Clinicopathologic correlations in Henoch-Schonlein nephritis

Area of Science:

• Pediatric Nephrology
• Immunology
• Rheumatology

Background:

• Renal involvement is a primary cause of mortality and morbidity in pediatric Henoch-Schonlein purpura (HSP).
• Understanding predictive factors for Henoch-Schonlein nephritis (HSN) is crucial for managing HSP in children.

Purpose of the Study:

• To identify predictors of Henoch-Schonlein nephritis (HSN) in children with Henoch-Schonlein purpura (HSP).
• To examine the correlation between clinical and pathological findings in HSN.

Main Methods:

• Retrospective evaluation of demographic and clinical data from 105 children with HSP.
• Kidney biopsy and pathological scoring in 17 patients.

Main Results:

• 39% of patients presented with renal involvement; HSN patients were significantly older at presentation.
• Age at presentation was the sole predictor of renal involvement.
• Proteinuria and hematuria were common laboratory findings; nephrotic syndrome and acute nephritis were also observed.
• Histologic findings included International Study of Kidney Disease in Children grades 3 (3B) and 2.
• Proteinuria severity positively correlated with pathologic grading, crescent formation, endocapillary proliferation, and tubular atrophy.

Conclusions:

• A significant correlation exists between the severity of renal involvement and pathological grading/scoring in HSN.
• Proteinuria severity is a significant determinant of renal pathological findings in HSN.