15 results
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... , and SLE) • Urinalysis
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Differential Diagnosis Algorithm ... Autoimmune • ITP • SLE ... HUS • DIC • Vasculitis ... #Causes #Hematology
Bronchiectasis: diagnosis and management 

Causes of localized -> diffuse bronchiectasis
Foreign body, Bronchial stenosis (tumor, .. ),
management Causes ... of localized -> diffuse ... RA, Sjögren, SLE ... #Differential #workup ... #algorithm #pulmonary
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... staining): • Low Complement ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm ... #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
• Immunologic Workup ... 90% - Low complement ... Discontinuation of causal ... • Immunologic Workup ... 80% - Low complement
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Erythematosus (SLE ... • Immunologic Workup ... Positive in 60-80% of cases ... 80% - Low complement ... Management #Summary #rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... diseases: - 10% SLE ... • Low serum C4 complement ... erythematosus (SLE
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
anti-Smith Ab, low complements ... pneumonitis • Diffuse ... enteropathy, and diffuse ... vein thrombosis Hematologic ... RNP antibodies, Complement
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Differential Diagnosis Algorithm ... genotypes): SS, SC, SE ... cardiac valve, vasculitis ... Differential #Diagnosis #Algorithm ... #workup #hematology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
diseases, such as SLE ... tract, and often causes ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic ... Differential #Diagnosis #Rheumatology