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Thrombotic Microangiopathies In Systemic Lupus Erythematosus

Dr. Laurent ARNAUD @Lupusreference

#TMAs #Thrombotic #Microangiopathies #Systemic #Lupus #Erythematosus #SLE #hematology
Microangiopathies In Systemic Lupus ... Microangiopathies #Systemic #Lupus ... Erythematosus #SLE ... #hematology #rheumatology ... differential #diagnosis #causes
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
: • Vascular occlusion ... Splenomegaly - CTD (SLE ... Associated - SLE ... Differential #Diagnosis #hematology ... #nonpalpable #dermatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
to 1:1 F:M • Clinical ... • Immunologic Workup ... Discontinuation of causal ... 40, F:M 9:1 • Clinical ... • Immunologic Workup
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... 40, F:M 9:1 • Clinical ... , oral ulcers, Lupus ... • Immunologic Workup ... Positive in 60-80% of cases
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
semiology of Cutaneous Vasculitis ... Identification of causes ... disease (10%) : SLE ... #dermpath #dermatology ... lesions #diagnosis #clinical
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Malar rash • SLE ... Hypersensitivity vasculitis ... Antiphospholipid-antibody syndrome • Vasculitis ... lesions • Discoid lupus ... Sarcoidosis #dermatology
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Non-Infectious Aortitis: • Vasculitides ... ANCA associated vasculitis ... (RA), Systemic lupus ... erythematosus (SLE ... (SPA) • Other Causes
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Autoimmune • ITP • SLE ... HUS • DIC • Vasculitis ... Diagnosis #Algorithm #Causes ... #Hematology
Causes of Approach to Altered Level of Consciousness - Workup
Clinical Exam - Focal
 • Trauma
 •
Causes of Approach ... Clinical Exam ... Hemorrhage • See ... Imaging Section Clinical ... #algorithm #Causes
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... inflammation Others: • Lupus ... such as systemic lupus ... reactions, and vaso-occlusive ... , and SLE) • Urinalysis