41 results
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... - Skin, glomeruli ... Urticaria and hypocomplementemia ... : - Kidneys: glomerular ... against MPO • Complement
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
Causes of Hematuria - Glomerular vs Non-glomerular

== Glomerular ==
- Glomerulonephritis 
- Thin basement membrane disease 

==
Causes of Hematuria ... basement membrane disease ... Polycystic kidney disease ... #Algorithm #Diagnosis ... Nonglomerular #Causes
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... staining): • Low Complement ... involvement: Anti-GBM Disease ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
or dipstick) Glomerular ... of Glomerular Bleeding ... basement membrane disease ... Diagnostic of GN or vasculitis ... disease Renal
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
dysmorphic RBC, RBC casts ... formation along glomerular ... staining (lg + complement ... MGPN • Complement ... (Dense deposit disease
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
atherosclerotic disease ... • Kidneys: Non-glomerular ... tract, and often causes ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Differential Diagnosis Algorithm ... insufficiency • Vasculitis ... #Feet #Ulcers #ulcerative ... Differential #Diagnosis #Algorithm ... #causes
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... Differential Diagnosis Algorithm ... • Thin GBM disease ... • Pauci-immune disease ... #Causes
Causes of Secondary IgA Nephropathy - Differential Diagnosis Algorithm
 • GI disorders: Celiac disease, Crohn's disease,
Causes of Secondary ... Differential Diagnosis Algorithm ... , Ulcerative Colitis ... #Nephropathy #Causes ... Differential #Diagnosis #Algorithm