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diagnosis rheumatology differential classification disease hematology management workup agglutinin anemia champs cold cryoglobulinemia cryoglobulins glomerular hemolytic huv mimics mnemonic nephritic
Causes of Hypocomplementemia - CHAMPS Mnemonic C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis H - Heavy Chain deposition
Causes of Hypocomplementemia ... Membranoproliferative glomerulonephritis ... Post/pauci immune glomerulonephritis ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
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
Vasculitis and Vasculitides - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... , Glomerulonephritis ... against MPO • Complement ... (Low levels mixed
Rapidly Progressive Glomerulonephritis (RPGN) RPGN has three primary pathophysiologic causes differentiated by immunofluorescence Immune Complex Mediated (granular staining):
staining): • Low ... Complement: Post-strep ... Idiopathic • Normal Complement ... #Vasculitis #differential ... #diagnosis #algorithm
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis 90%: -
rapidly progressive glomerulonephritis ... ANCA Associated Vasculitis ... anti-GBM) 10%: - Low ... Complement Levels ... - Normal Complement
IgG4-Related Disease Clinical history: Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor 4 phenotypes: •
IgG4-Related Disease ... node), high serum IgG4 ... rheumatoid factor), ± hypocomplementemia ... No necrosis, No vasculitis ... with increased IgG4
Vasculitis - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions • Mononeuritis multiplex • Hematuria, proteinuria,
, pauci-immune glomerulonephritis ... (Glomerulonephritis ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic ... Mononeuropathy, Glomerulonephritis
Cryoglobulinemia Summary Cryoglobulins: • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Skin ulcers - Glomerulonephritis ... factor level • Low ... serum C4 complement ... • IgA vasculitis ... • Vasculitis
Recommended initial testing for patients being evaluated for glomerular disease 24-hour urine collection - Quantify proteinuria.
in monitoring low-level ... or alternative complement ... for ANCA-related vasculitis ... workup #diagnosis #glomerulonephritis
Sjogren's Syndrome Overview Epidemiology: • F > M: 9:1 • 5-6th Decades (can be any age) Autoimmune exocrinopathy multisystemic disease
Cytopenia: 2% • Hypocomplementemia ... ) • Cutaneous vasculitis ... acidosis • NAGMA • Glomerulonephritis ... : 2% Systemic Vasculitis
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