9 results
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology ... of Hypocomplementemic ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... #HUV #Pathophysiology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Rapidly Progressive ... three primary pathophysiologic ... staining): • Low ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
, proteinuria, rapidly ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... (Low levels mixed
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
alveolar hemorrhage + rapidly ... ANCA Associated Vasculitis ... anti-GBM) 10%: - Low ... Complement Levels ... - Normal Complement
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... , proteinuria, Rapidly ... Pauci immune GN (rapidly ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
Differential Diagnosis Algorithm ... B-Cell ~90% • Low ... correlated with rapid ... Classification #pathophysiology ... #differential #algorithm
Acute limb ischemia (ALI)

Rapid decrease in lower limb blood flow due to acute occlusion of peripheral
ischemia (ALI) Rapid ... lower limb blood flow ... thromboembolic disease, vasculitis ... pathophysiology:
Monoclonal Gammopathy of Renal Significance (MGRS)

MGRS
• MGRS refers to kidney disease caused by nephrotoxic monoclonal immunoglobulins
proteinuria with rapid ... Pathogenesis: How ... Damages Kidneys • Low ... tubulopathy) - Complement ... formation causing vasculitis