31 results
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
ANA (Antinuclear ... • Sjögren syndrome ... Microscopic polyangiitis ... Jcortesizaguirr #ANA ... Antineutrophil #antibodies #diagnosis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... ): • Microscopic ... often causes arthritis ... Vasculitis: + MPO-ANCA ... Dx: GPA, EGPA, microscopic
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pauci-Immune: - ANCA-positive ... polyangiitis, Microscopic ... polyangiitis) - ANCA-negative ... testing: anti-ANCA ... , anti-GBM ab, ANA
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
Disease Associations ANA ... Graves' disease c-ANCA ... granulomatosis p-ANCA ... Microscopic polyangiitis ... Associations #diseases #diagnosis
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
Differential Diagnosis ... dipstick, urine microscopy ... osmolarity If cause ... Glomerulonephritis / Vasculits ... : ANCA, ANA, Anti-GBM
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
small vessels - ANCA-associated ... granulomatosis - microscopic ... drugs, malignomas, and ... #Vessels #Diagnosis ... #Rheumatology #Diagnosis
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
causes differentiated ... Negative IF): • PR3-ANCA ... (C-ANCA): GPA > ... > eGPA • MPO-ANCA ... (P-ANCA): eGPA,
Causes of Pharyngitis - Differential Diagnosis
Infectious:
 • Bacterial: Group A Strep, Group B and C Strep,
Causes of Pharyngitis ... - Differential Diagnosis ... Lupus, Behcet syndrome ... , ANCA vasculitis ... #Causes
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
- Differential Diagnosis ... • ANCA Associated ... : - Microscopic ... Disease • Cogan syndrome ... #differential #diagnosis
BEE Syndromes - Immune-mediated conditions affecting the brain, eye, and ear

Visual or auditory symptoms in conjunction
important, as early diagnosis ... Inflammatory causes ... spectrum disorder • ANCA-associated ... vasculitides • ... #differential #diagnosis