19 results
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
ANA (Antinuclear ... Systemic lupus erythematosus ... in drug-induced SLE ... Jcortesizaguirr #ANA ... #rheumatology #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often causes arthritis ... branches • GCA ... LFT • ESR • ANA ... , and SLE) • Urinalysis ... #rheumatology #
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Cell Arteritis (GCA ... Nodosa (PAN), ANCA ... Systemic lupus erythematosus ... (SLE), Sarcoidosis ... #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... (SLE) - Diagnosis ... Workup: - ANA ... Positive in 60-80% of cases ... #Summary #rheumatology
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... Negative IF): • PR3-ANCA ... (C-ANCA): GPA > ... > eGPA • MPO-ANCA ... (P-ANCA): eGPA,
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
findings (ANA, ... : • ANCA-associated ... Serositis Labs: • ANA ... antibodies • (-) ANA ... #Diagnosis #Rheumatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
- Differential Diagnosis ... Secondary: CTD: SLE ... • ANCA Associated ... #dermatology #rheumatology ... #differential #diagnosis
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
diseases, such as SLE ... purpura: Strong sign ... ischemia • Skin: Erythematous ... often causes arthritis ... #Rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... Cryoglobulinemia (MIXED) • ANCA ... - GPA - EGPA ... Associated - SLE ... #hematology #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Workup: - ANA ... Systemic Lupus Erythematosus ... Workup: - ANA ... comparison #table #rheumatology ... #diagnosis #management