10 results
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... and branches • GCA ... systemic lupus erythematosus ... purpura: strong sign ... #rheumatology #
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
Systemic lupus erythematosus ... Vasculitis: • ... Renal-limited vasculitis ... Antineutrophil #antibodies #diagnosis ... #rheumatology #
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
- Differential Diagnosis ... Cell Arteritis (GCA ... Nodosa (PAN), ANCA ... Systemic lupus erythematosus ... #rheumatology
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 #diagnosis ... #algorithm #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Diagnosis Framework ... purpura: Strong sign ... ischemia • Skin: Erythematous ... tract, and often causes ... #Rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... Cryoglobulinemia (MIXED) • ANCA ... - GPA - EGPA ... #Differential #Diagnosis ... #hematology #rheumatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... • Ulcerated, erythematous ... Differential Diagnosis ... dermatology #rash #diagnosis ... #rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... DDX: • ANCA (Antineutrophil ... systemic lupus erythematosus ... classification #rheumatology
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 ... #pulmonary #causes
Giant cell arteritis (GCA)

Giant cell arteritis (GCA) definition: Most common systemic inflammatory vasculitis in older adults
systemic inflammatory vasculitis ... systemic sx + signs ... = vasculitis vs ... them, but urgent rheumatology ... #Temporal #Signs