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

Immune Complex Mediated (granular staining):
With associated pulmonary ... Negative IF): • PR3 ... ANCA (C-ANCA): GPA ... >>> MPA > eGPA ... , MPA >>> GPA Stanford
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
ANCA-Associated Vasculitis ... polyangiitis (GPA ... polyangiitis (MPA ... polyangiitis (EGPA ... #Diagnosis #Rheumatology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
(AAV): GPA (granulomatous ... polyangiitis), EGPA ... DAH), asthma in EGPA ... subglottic stenosis) in GPA ... #management #treatment
Frequency of ANCA Positivity in Different Conditions
ANCA-Associated Vasculitis
 • GPA - PR3-ANCA 75%, MPO-ANCA 20%, 5%
ANCA-Associated Vasculitis ... • GPA - PR3-ANCA ... ANCA negative • EGPA ... Renal-limited vasculitis ... #diagnosis #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
capillaritis • EGPA ... 60% • GPA: ... and branches • GCA ... • ANCA (Dx: GPA ... , EGPA, microscopic
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Polyangiitis (GPA ... polyangiitis (GPA ... GPA causes disease ... polyangiitis • EGPA ... #Polyangiitis #GPA
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
- Differential Diagnosis ... Kaposi's sarcoma • Rheumatologic ... Autoimmune: ANCA-Assoc vasculitis ... (GPA > EGPA, MPA ... #pulmonary #causes
Extra-articular and Other Conditions Associated with Joint Pain

Eyes
  • Iritis or uveitis - Spondyloarthropathies, Sarcoidosis,
, Sarcoidosis, GPA ... polychondritis, GPA ... cell arteritis, GPA ... Reactive arthritis, GPA ... severe sinusitis - GPA
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Elevated ESR and CRP GCA ... develop in pts with GCA ... progressive) EGPA ... 60/ GPA (Granulomatosis ... #Rheumatology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Associated with Joint ... Sarcoidosis • GPA ... #dermatology #joint ... #differential #diagnosis ... #rheumatology