11 results
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
Antibody) and ANCA ... lupus erythematosus ... in drug-induced SLE ... Jcortesizaguirr #ANA ... antibodies #diagnosis #rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... DDX: • ANCA (Antineutrophil ... cytoplasmic antibody ... lupus erythematosus ... classification #rheumatology
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antibody refers ... Positive ANAAutoimmune ... (SLE), Systemic ... (SLE), Systemic ... #patterns #rheumatology
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Negative IF): • PR3-ANCA ... (C-ANCA): GPA > ... > eGPA • MPO-ANCA ... (P-ANCA): eGPA, ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often causes arthritis ... Vasculitis: + MPO-ANCA ... lupus erythematosus ... , and SLE) • Urinalysis ... differential #diagnosis #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... and Management ... Workup: - ANA ... #lupus #Systemic ... #Summary #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Workup: - ANA ... months to years) Systemic ... Workup: - ANA ... #lupus #sle #comparison ... #table #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
diseases, such as SLE ... : ANCA Associated ... often causes arthritis ... + MPO) Cryoglobulinemic ... Differential #Diagnosis #Rheumatology
Sjogren's Syndrome Overview

Epidemiology:
• F > M: 9:1
• 5-6th Decades (can be any age)

Autoimmune exocrinopathy multisystemic disease
overlaps with RA, SLE ... Nephrogenic DI Hematologic ... 7%, Cryoglobulinemia ... Sjogrens #Syndrome #Rheumatology ... #Diagnosis #Management
Drug Induced Lupus (DIL)
 • Epidemiology: -10% of all lupus cases, drug-dependent, 4:1 to 1:1 F:M
Workup: - ANA ... Discontinuation of causal ... Lupusreference #DrugInduced ... #Lupus #DIL #rheumatology ... #management