217 results
Causes of Leukocytosis and Leukopenia - Differential Diagnosis
 • Eosinophilia (AEC > 500, hypereosinophilia > 1500):
Connective Tissue, Infections ... Lymphocytosis: Infection ... Lymphocytopenia: Infections ... • Neutropenia: Infections ... #causes #hematology
Thrombocytosis - Differential Diagnosis
Platelet Count > 450
Reactive:
 • Anemia/blood loss (Fe deficiency)
 • Infection/Sepsis
 • Non-infectious
- Differential Diagnosis ... deficiency) • Infection ... Sepsis • Non-infectious ... (malignancy, rheumatologic ... causes #Platelets #hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
→ Refer to hematology ... TPO, TPO-RA • Infections ... : Chronic infections ... bacterial and viral infections ... #Algorithm #hematology
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
history of recurrent infections ... • Infectious ... community-acquired infections ... hypogammaglobulinemia #immunology #hematology ... #diagnosis #management
Non-HCV infectious mixed cryoglobulinemia vasculitis - Diagnosis, causes and management - French Vasculitis Study Group

< 5%
Non-HCV infectious ... Specific anti-infectious ... related to HBV infection ... absence of anti-infectious ... with refractory disease
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Triggering factor (infection ... Acquired HLH: • Infections ... , Infection under ... Etiological+++: Anti-infectious ... #management #treatment
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... Mycoplasma pneumoniae infection ... spherocytosis) • Infections ... #differential #diagnosis ... #hematology #anemia
Causes of Localized Lymphadenopathy - Differential Diagnosis Algorithm
Cervical:
 - Anterior
     • Infection
Anterior • Infection ... • Kikuchi Disease ... Axillary: • Infection ... (In absence of infection ... Algorithm #Causes #Hematology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
- Due to Viral infection ... Polyclonal - Viral Infection ... Check For: • Infections ... Polyclonal IgM post infectious ... hemolytic #anemia #hematology
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
- Differential Diagnosis ... Pseudotumor - Infectious ... History of Bleeding, Infection ... #Differential #Diagnosis ... Algorithm #Causes #Hematology