14 results
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
syndrome Anti-Scl ... c-ANCA - Vasculitis ... granulomatosis p-ANCA ... - Vasculitis, e.g ... diagnosis #table #rheumatology
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
in drug-induced SLE ... scleroderma) - Anti-Scl ... Vasculitis: • ... Renal-limited vasculitis ... antibodies #diagnosis #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
+MPO) • Cryoglobulinemic ... Vasculitis: + MPO-ANCA ... Low levels mixed cryoglobulinemia ... , and SLE) • Urinalysis ... differential #diagnosis #rheumatology
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
glomerulonephritis 90%: - ANCA ... Double Positive (ANCA ... Complement Levels: SLE ... , Cryoglobulinemic ... differentiation syndrome in APL
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Secondary: CTD: SLE ... Urticarial/LCV) - Cryoglobulinemic ... ANCA Associated: ... : • Behcet Disease ... #dermatology #rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• Autoimmune diseases ... : - 10% SLE or ... DDX: • ANCA (Antineutrophil ... erythematosus (SLE ... classification #rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Splenomegaly - CTD (SLE ... /HSP • Cryoglobulinemia ... (MIXED) • ANCA ... Associated - SLE ... #rheumatology #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
, such as SLE, atherosclerotic ... disease, drug reactions ... most important diseases ... + MPO) Cryoglobulinemic ... Differential #Diagnosis #Rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
thiazidic, PPI, ACE ... constitutional symptoms • Treatment ... life-threatening • Treatment ... Evolution: Chronic disease ... comparison #table #rheumatology
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
in 24h Airway disease ... / Autoimmune: ANCA-Assoc ... vasculitis (GPA ... > EGPA, MPA), Cryoglobulinemia ... Goodpasture's, SLE