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

Immune Complex Mediated (granular staining):
pathophysiologic causes ... ANCA (C-ANCA): GPA ... , MPA >>> GPA Stanford ... #differential # ... diagnosis #algorithm
ILD of Known Cause - Differential Diagnosis
Exposure:
 • Occupational: Asbestosis, Silicosis, Hypersensitivity, Pneumonitis
 • Treatment Related:
ILD of Known Cause ... - Differential ... Diagnosis Exposure ... Granulomatous DX with Vasculitis ... : GPA, EGPA •
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
Identification of causes ... (5%): PAN > GPA ... #dermpath #dermatology ... signs #lesions #diagnosis ... pathology #lesions #differential
Glomerulonephritis - Differential Diagnosis Framework
ANCA:
 • C-ANCA: GPA (Wegener's)
 • P-ANCA: Microscopic Polyangiitis, Eosinophilic GPA (Churg
Diagnosis Framework ... ANCA: • C-ANCA: GPA ... , Eosinophilic GPA ... Strauss) Anti-GBM ... #causes
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
the Skin - Differential ... Diagnosis Framework ... - GPA Cutaneous ... #rheumatology # ... differential #diagnosis
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 #GPA ... #diagnosis #rheumatology
ANCA-Associated Vasculitis
There are many definitions, but most come down to the presence of granulomas (pathologically or
ANCA-Associated Vasculitis ... polyangiitis (GPA ... #differential # ... diagnosis #algorithm ... #rheumatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... Diagnosis Framework ... - GPA - EGPA ... Vasculopathy #Purpura #Differential ... #Diagnosis #hematology
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
polyangiitis (GPA ... polyangiitis (MPA ... rarely PR3 Anti-GBM ... PANCA #MPO #PR3 #Diagnosis ... #Rheumatology
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Autoimmune ANCA vasculitis ... (AAV): GPA (granulomatous ... subglottic stenosis) in GPA ... mononeuritis multiplex WORKUP ... Goodpasture's cause