16 results
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
ANCA-Associated ... - C-ANCA pattern ... antibody) - P-ANCA ... Hydralazine-induced ANCA ... #CANCA #PANCA #
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
Antibody) and ANCA ... Microscopic polyangiitis ... - MPO>PR3 - ANCA ... - MPO>PR3 - ANCA ... #diagnosis #rheumatology
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
ANA - Non-specific ... hepatitis Anti-CCP, Rheumatoid ... c-ANCA - Vasculitis ... granulomatosis p-ANCA ... #antibodies
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- ANCA specific ... Vasculitis: + MPO-ANCA ... purpura: strong sign ... LFT • ESR • ANA ... ) pattern: antibodies
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
others (RNP, aPL antibodies ... ribonucleoprotein) • RA: Rheumatoid ... Polymerase Ill • ANCA ... Vasculitis: P-ANCA ... perinuclear), C-ANCA
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pauci-Immune: - ANCA-positive ... polyangiitis, Microscopic ... polyangiitis) - ANCA-negative ... testing: anti-ANCA ... , anti-GBM ab, ANA
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Purpura Anti-GBM antibodies ... Negative IF): • PR3-ANCA ... (C-ANCA): GPA > ... > eGPA • MPO-ANCA ... (P-ANCA): eGPA,
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
(ANA) ANA or Anti-NucIear ... Using fluorescence microscopy ... Rheumatic Diseases ... • Rheumatic Diseases ... #rheumatology #diagnosis
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Nodosa (PAN), ANCA ... associated vasculitis ... (rare) • Rheumatic ... (IgG4-RD), Rheumatoid ... Differential #Diagnosis #rheumatology
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
Vasculitis of ... small vessels - ANCA-associated ... granulomatosis - microscopic ... drugs, malignomas, and ... Vessels #Diagnosis #Rheumatology