11 results
Glomerulonephritis - Differential Diagnosis Framework
ANCA:
 • C-ANCA: GPA (Wegener's)
 • P-ANCA: Microscopic Polyangiitis, Eosinophilic GPA (Churg
Glomerulonephritis ... : Microscopic Polyangiitis ... Churg Strauss) Anti-GBM ... differential #diagnosis #nephrology ... #causes
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 ... pulmonary involvement: Anti-GBM ... Disease (Goodpasture's
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... cells on urine microscopy ... disease • ... wall) • Anti-GBM ... • Pauci-immune disease
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
alveolar hemorrhage + Glomerulonephritis ... polyangiitis, Microscopic ... 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
ANA (Antinuclear ... Vasculitis: • Microscopic ... + 90% • Anti-GBM ... antibodies #diagnosis #rheumatology ... #diseases
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
dipstick, urine microscopy ... signs • Glomerulonephritis ... , ANA, Anti-GBM, ... Anti-ds-DNA, C3 ... Differential #Diagnosis #nephrology
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
dysmorphic RBC, RBC casts ... (Dense deposit disease ... immune deposits on EM ... microangiopathy (TMA), anti-phospholipid ... #MPGN #nephrology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
): • Microscopic ... often causes arthritis ... ) • Anti-GBM - ... Dx: GPA, EGPA, microscopic ... differential #diagnosis #rheumatology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
life-threatening diseases ... Inflammatory eye disease ... antibody, Anti-GBM ... usually low in anti-GBM ... Goodpasture's cause
Anti-GIomeruIar Basement Membrane Disease (Goodpasture's Disease)

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