5 results
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pauci-Immune: - ANCA-positive ... polyangiitis) - ANCA-negative ... testing: anti-ANCA ... ab, anti-GBM ab ... , ANA, C3, C4, anti-CCP
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
Anti-Sm (Smith) ... Vasculitis: • Microscopic ... polyangiitis without renal ... + 90% • Anti-GBM ... Jcortesizaguirr #ANA
Rapidly Progressive Glomerulonephritis (RPGN) 
 - Loss of kidney function over a short period of tirne
of glomerular disease ... staining on IF • No EM ... cytoplasmic antibody (ANCA ... ) + • c-ANCA: ... staining • p-ANCA
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
renal abnormalities ... ): • Microscopic ... glomerulonephritis) • Anti-GBM ... LFT • ESR • ANA ... #rheumatology #classification
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Summary Autoimmune ANCA ... membrane: Goodpasture ... Auto-antibodies: ANCA ... antibody, Anti-GBM ... usually low in anti-GBM