15 results
Giant Cell (Temporal) Arteritis: Pathogenesis and investigations
Risk Factors:
 - Unclear environmental triggers (may be viral, not
HLA-DR4 mutation ... yrs old; F>M Signs ... Temporal #Arteritis #Pathophysiology ... #Diagnosis #Signs ... #Symptoms #Vasculitis
Hemophagocytic Lymphohistiocytosis (HLH)
Definition: Overwhelming clinical syndrome associated with excessive macrophage activation and cytokine storm due to
Presentation / Diagnosis ... : HLH signs and ... Diagnosis via genetic ... #management #treatment ... #hematology
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
) Pathophysiology ... Auto-amplification loop Diagnosis ... Lymphohistiocytosis #diagnosis ... #management #treatment ... #summary #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... episcleritis as well as inner ... Differential Diagnosis ... purpura: strong sign ... #rheumatology #
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
, small-vessel vasculitis ... common in Asia • HLA-B51 ... ) Differential Diagnosis ... #management #signs ... #symptoms #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Diagnosis Framework ... Differential Diagnosis ... purpura: Strong sign ... episcleritis as well as inner ... #Rheumatology
Dermatomyositis (DM) and Polymyositis (PM): Pathogenesis and clinical findings
Elevated Antinuclear Antibodies: Anti-Jo-1, Anti-OJ, Anti-Mi2, Anti-SRP, Anti-EJ,
Muscle necrosis, fiber ... Polymyositis #PM #Diagnosis ... #Pathophysiology ... #Signs #Symptoms ... #Vasculitis
Hemophagocytic Lymphohistiocytosis (HLH)

High mortality without prompt recognition and management. HLH is a critical diagnostic consideration in
recognition and management ... Presentation • Common Signs ... Pathophysiology ... Approach • Initial management ... #Management #Hematology
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Leukostasis: • Pathophysiology ... WBC >100k, + lab signs ... Lysis Syndrome: • Pathophysiology ... Syndrome #TLS #diagnosis ... #management #hematology
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 ... #Management