Correlate the following patient presentations with their most characteristic histopathologic finding on renal biopsy.
- A 24-year-old female with a malar rash developing acute-onset hypertension, oliguria, and red blood cell casts.Subendothelial immune complex deposits creating a 'wire loop' appearance
- A 62-year-old male with a history of colon cancer presenting with anasarca, normal serum creatinine, and heavy proteinuria.Subepithelial immune complex deposits with a 'spike and dome' appearance
- A 28-year-old male with recurrent, transient episodes of gross hematuria occurring contemporaneously with viral upper respiratory tract infections.Mesangial hypercellularity with prominent IgA and C3 deposition
- A 10-year-old boy presenting with periorbital edema and cola-colored urine two weeks after resolution of a skin infection.Large subepithelial electron-dense 'humps' on electron microscopy
- A 58-year-old female with chronic untreated hepatitis C presenting with palpable purpura, joint pain, and mixed nephritic-nephrotic syndrome.Subendothelial deposits with mesangial interposition causing a 'tram-track' splitting of the basement membrane
Answer
Lupus nephritis matches with 'wire loops'; malignancy-associated nephrotic syndrome matches with 'spike and dome'; synpharyngitic hematuria matches with mesangial IgA deposition; post-impetigo nephritic syndrome matches with subepithelial 'humps'; and Hepatitis C-associated renal disease matches with 'tram-track' appearance.
Each clinical vignette provides classic demographic and historical clues for specific glomerular diseases. Identifying the underlying etiology allows for direct correlation with its pathognomonic renal biopsy findings.
Step-by-Step Solution
Key Concept
Glomerular Disease Histopathology and Clinical Correlations