9 results
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal ... polyangiitis, Microscopic ... ab, anti-GBM ab ... biopsy By Tess Litchman ... differential #diagnosis #nephrology
Summary of characteristic abnormalities of selected glomerular diseases
Light Microscopy (LM) - Immunofluorescence Microscopy (IM) - Electron
selected glomerular diseases ... (IM) - Electron ... Microscopy (EM) ... Amyloid RPGN • Anti-GBM ... #nephrology #pathology
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
of cases) 2 ... Vasculitis: • Microscopic ... ANCA+ 90% • Anti-GBM ... antibodies #diagnosis #rheumatology ... #diseases
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... Henoch-SchonIein Purpura Anti-GBM ... Limited to Kidney: Anti-GBM ... involvement: Anti-GBM ... Disease (Goodpasture's
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... proliferative • Anti-GBM ... polyangiitis (GPA) / microscopic ... Minimal change disease ... #Proteinuria #Nephrology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
life-threatening diseases ... Inflammatory eye disease ... ANCA antibody, Anti-GBM ... usually low in anti-GBM ... Goodpasture's cause
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
PR3-ANCA): • Microscopic ... tract, and often causes ... glomerulonephritis) • Anti-GBM ... Dx: GPA, EGPA, microscopic ... differential #diagnosis #rheumatology
Anti-GIomeruIar Basement Membrane Disease (Goodpasture's Disease)

What is it? A small vessel vasculitis with circulating antibodies directed
Anti-GIomeruIar ... Diagnosis: • Anti-GBM ... weeks By Tess Litchman ... AntiGBM #diagnosis #nephrology ... #pulmonary
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
(PR3-ANCA)): Microscopic ... tract, and often causes ... abdominal pain and GN Anti-GBM ... Urticarial Vasculitis (anti-C1q ... Differential #Diagnosis #Rheumatology