13 results
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal ... Peripheral edema, Disease-specific ... vasculitis, Behcet disease ... Goodpasture's Disease ... ab, anti-GBM ab
Summary of characteristic abnormalities of selected glomerular diseases
Light Microscopy (LM) - Immunofluorescence Microscopy (IM) - Electron
selected glomerular diseases ... Microscopy (EM) ... Minimal change disease ... Amyloid RPGN • Anti-GBM ... #glomerular #diseases
Systemic Sclerosis Associated Autoantibodies
Anti-topoisomerase I (anti-Sc170): Diffuse skin disease, Pulmonary fibrosis
Anti-centromere: Limited skin disease (~93-95%), Pulmonary
Diffuse skin disease ... , Pulmonary fibrosis ... : Limited skin disease ... III: Diffuse, Renal ... , Overlap BCM IM
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
connective tissue disease ... Vasculitis: • Microscopic ... ANCA+ 90% • Anti-GBM ... disease - MPO>PR3 ... #rheumatology #diseases
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
Pulmonary Renal ... Vasculitis - Anti-GBM ... Disease - Double ... Positive (ANCA + anti-GBM ... , mitral valve disease
Acute Kidney Injury (AKI) - Differential Diagnosis Framework

PRE-Renal AKI:
 • Hypovolemia
 • Congestion
 • Medications
 •
Framework PRE-Renal ... Immune-complex disease ... , Anti-GBM • Tubular ... Bilateral ureteral disease ... Differential #Diagnosis #nephrology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Pulmonary Renal ... life-threatening diseases ... Inflammatory eye disease ... ANCA antibody, Anti-GBM ... usually low in anti-GBM
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
polyangiitis (GPA), microscopic ... polyangiitis without renal ... involvement - PR3>MPO Microscopic ... 90%, rarely PR3 Anti-GBM ... disease - MPO>PR3
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
glomerulonephritis) • Anti-GBM ... disease, and ocular ... (Granulomatous disease ... atherosclerotic disease ... most important diseases
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
proliferative • Anti-GBM ... polyangiitis (GPA) / microscopic ... Minimal change disease ... #Proteinuria #Nephrology