7 results
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... (C-ANCA): GPA > ... Glomerulonephritis #Vasculitis ... #differential # ... #rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
• Ig A vasculitis ... HCV, HBV Not Vasculitis ... #Diagnosis #hematology ... #rheumatology # ... #nonpalpable #dermatology
ANCA-Associated Vasculitis
There are many definitions, but most come down to the presence of granulomas (pathologically or
Vasculitis There ... pathologically or clinically ... #Vasculitis #differential ... #diagnosis #algorithm ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... tract, and often causes ... Vasculitis: + MPO-ANCA ... #rheumatology # ... classification
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... • Pauci-immune vasculitis ... Diagnosis: Vasculitis ... #dermatology #rash ... #diagnosis #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Differential Diagnosis ... tract, and often causes ... - interstitial keratitis ... Diagnosis #Rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
- GPA, EGPA, microscopic ... • IgA vasculitis ... • Vasculitis ... #rheumatology # ... vasculitis