141 results
Granulomatous Lung Disease - Differential Diagnosis Algorithm
OP: organising pneumonia; EGPA: eosinophilic granulomatosis with polyangiitis; NSG: necrotising
Disease - Differential ... with polyangiitis ... with polyangiitis ... interstitial lung disease ... granuloma #Lung #Disease
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... with Polyangiitis ... GPA causes disease ... vasculitis #Dermatologic ... GPA #dermatology
Small Vessel Vasculitides
 • Granulomatosis with polyangiitis - Granulomatous manifestations (e.g., nasal crusting, destructive sinusitis, pulmonary
Vasculitides • Granulomatosis ... with polyangiitis ... - Granulomatous ... Interstitial lung disease ... with polyangiitis
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
seen in 30—70% of cases ... connective tissue disease ... ANCA+ 90% • Granulomatosis ... 90% • Anti-GBM disease ... #rheumatology #diseases
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... • Vasculitis: Granulomatosis ... with polyangiitis ... , Eosinophilic granulomatosis ... with polyangiitis
Demyelinating Diseases - Differential Diagnosis
 • Inflammatory: MS, ADEM, NMO, Paraneoplastic, Sjogren's, Polyarteritis nodosa, SLE
 •
Demyelinating Diseases ... PML, HTLV-1 • Granulomatous ... : Lymhomatoid granulomatosis ... Demyelinating #Diseases ... Differential #Diagnosis #causes
ANCA-Associated Vasculitis
A group of necrotizing, small-vessel vasculitis without immune complex deposition. Complement levels are normal due
Includes granulomatosis ... + antibody) Granulomatosis ... - 80-90% PR3+ Granulomatosis ... Eosinophilic granulomatosis ... PR3 Anti-GBM disease
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
• Infectious Causes ... Non-Infectious Causes ... : Granulomatosis ... with polyangiitis ... with polyangiitis
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... antibodies • Granulomatosis ... with polyangiitis ... / microscopic polyangiitis ... Minimal change disease
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
(Eosinophilic granulomatosis ... with polyangiitis ... , Granulomatosis ... with polyangiitis ... , Microscopic polyangiitis