15 results
diagnosis rheumatology differential management types allergy hypersensitivity igg4 pathophysiology reactions champs clinicopathology comparison cryoglobulinemia cryoglobulins erythematosus gammopathy gi glomerulonephritis hematology
Pathophysiology of Hypocomplementemic Urticarial Vasculitis C1q/anti-C1q antibiody -> Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology of Hypocomplementemic ... Urticarial Vasculitis ... Complex Formation - Complement ... Formation -> Vasculitis ... TerrierBen #Hypocomplementemic
Causes of Hypocomplementemia - CHAMPS Mnemonic C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis H - Heavy Chain deposition
Causes of Hypocomplementemia ... Chain deposition disease ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Vasculitis and Vasculitides - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... (Granulomatous disease ... against MPO • Complement ... #rheumatology #classification
Vasculitis - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions • Mononeuritis multiplex • Hematuria, proteinuria,
Systemic rheumatic diseases ... atherosclerotic disease ... most important diseases ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Rapidly Progressive Glomerulonephritis (RPGN) RPGN has three primary pathophysiologic causes differentiated by immunofluorescence Immune Complex Mediated (granular staining):
staining): • Low Complement ... Idiopathic • Normal Complement ... involvement: Anti-GBM Disease ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
IgG4-Related Disease Clinical history: Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor 4 phenotypes: •
IgG4-Related Disease ... rheumatoid factor), ± hypocomplementemia ... No necrosis, No vasculitis ... IgG4 #Related #Disease
Causes of ileitis beyond Crohn’s disease and infections include systemic disorders -spondyloarthropathies, vasculitides, ischemia, and amyloidosis
beyond Crohn’s disease ... spondyloarthropathies, vasculitides ... See below for table ... helpful paper complements ... #Differential #Table
Cryoglobulinemia Summary Cryoglobulins: • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• Autoimmune diseases ... • Low serum C4 complement ... • IgA vasculitis ... • Vasculitis ... diagnosis #types #classification
Summary table of types of hypersensitivity reactions. Type 1 - Mediators: lgE - Antigen Form: Soluble
Summary table of ... reaction, Haemolytic disease ... they activate complement ... types #allergy #table ... #classification
Hypersensitivity Types and Their Mechanisms Type I - lgE - Soluble antigen - Allergen-specific lgE antibodies bind
antigen, leading to complement ... during hemolytic disease ... Complement activation ... Hypersensitivity #Types #Classification ... Diagnosis #Reactions #Table
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