43 results
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
) • Systemic lupus ... Vasculitis: • ... Renal-limited vasculitis ... Antineutrophil #antibodies #diagnosis ... #rheumatology #
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
Autoantibodies in Rheumatology ... • Lupus (SLE): ... ANA (anti-nuclear ... Vasculitis: P-ANCA ... #diagnosis #associations
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
c-ANCA - Vasculitis ... granulomatosis p-ANCA ... - Vasculitis, e.g ... #diagnosis #table ... #rheumatology #
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
symptomatology Differential ... Diagnosis for Pulmonary ... Complex: Systemic lupus ... testing: anti-ANCA ... , ANA, C3, C4, anti-CCP
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Post-strep GN, Lupus ... Disease (Goodpasture's ... #differential # ... diagnosis #algorithm ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
(anti-C1q Vasculitis ... such as systemic lupus ... testes -> pain, infarct ... differential #diagnosis ... #rheumatology #
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
ANCA-Associated ... 90%, rarely PR3 Anti-GBM ... disease - MPO>PR3 ... MPO #PR3 #Diagnosis ... #Rheumatology
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
Auto-Antibodies: - ANA ... (aPL) 30-45% Differential ... Diagnosis and Lupus ... sclerosis, Still's disease ... #rheumatology
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
small vessels - ANCA-associated ... - systemic lupus ... #Vessels #Diagnosis ... #Rheumatology # ... Diagnosis
I’M DAMN SHARP - Lupus Diagnosis Mnemonic
I  	 Immunoglobulins (Anti-dsDNA, Anti-Sm, Anti-phospholipid)
M 	 Malar Rash
D
M DAMN SHARP - Lupus ... Diagnosis Mnemonic ... Antinuclear Antibody (ANA ... Arthritis R Renal Disease ... erythematosus #rheumatology