14 results
A System for Vasculitides 

#Diagnosis #IM #Rheum #Vasculitis #Small #Medium #Large #Vessel #Size #Classification #ANCA #Differential
Rheum #Vasculitis #Small ... #Vessel #Size #Classification ... #ANCA #Differential ... #Algorithm #Ddxof
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
abnormalities SMALL ... Associated - ANCA ... Hydralazine-Induced ANCA-Associated ... pain, infarct • Small ... #rheumatology #classification
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Glomerulonephritis • With associated ... (C-ANCA): GPA > ... (P-ANCA): eGPA, ... Glomerulonephritis #Vasculitis #differential ... #diagnosis #algorithm
Diagnosis and management of Polyarteritis Nodosa (PAN)

Chapel Hill 2012 definition: 
Necrotizing vasculitis ofmedium or small arteries
vasculitis ofmedium or small ... venules, and not associated ... with ANCA FFS ... Management #Vasculitis #Differential
ANCA-Associated Vasculitis
There are many definitions, but most come down to the presence of granulomas (pathologically or
ANCA-Associated ... StanfordChiefs #ANCA ... #Vasculitis #differential ... #diagnosis #algorithm
Causes of Purpura - Differential Diagnosis
Non-PalpabIe → Palpable
 • Thrombocytopenia (HIT, ITP/HUS), Coagulation defects (DIC, warfarin
Causes of Purpura - Differential ... cryoglobulins, IgA), ANCA ... associated small ... palpable #Causes #Differential
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... Findings: • Small ... ulceration Small ... Vasculitis • ANCA ... Associated: -
Vasculitis - Break down based on vessel size 
Distribution of vessel involvement by large vessel vasculitis,
vasculitis, and small ... immune complex small ... basement membrane; ANCA ... #Rheumatology #Differential ... Medium #Large #Classification
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
Classification of ... Vasculitis of small ... vessels - ANCA-associated ... dermatomyositis #Size #Classification
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... Cryoglobulinemia (MIXED) • ANCA ... associated small ... - MPA • CTD Associated ... Vasculopathy #Purpura #Differential