42 results
Thrombocytosis - Differential Diagnosis
Platelet Count > 450
Reactive:
 • Anemia/blood loss (Fe deficiency)
 • Infection/Sepsis
 • Non-infectious
- Differential Diagnosis ... Reactive: • Anemia ... deficiency) • Infection ... Sepsis • Non-infectious ... , trauma) • Post-splenectomy
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
hemolysis, deficiency anemia ... Inflammatory Conditions: Rheumatologic ... TPO, TPO-RA • Infections ... : Chronic infections ... bacterial and viral infections
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Triggering factor (infection ... Acquired HLH: • Infections ... Still disease, Infection ... Etiological+++: Anti-infectious ... #management #treatment
Invasive Aspergillus (IA) - Diagnosis and Management
Aspergillus is ubiquitous in nature. Most invasive infections are caused
Most invasive infections ... Rhinosinusitis, CNS infection ... , Disseminated infection ... systemic vori Infectious ... #fungal #infectiousdiseases
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 ... infectious setting ... #hematology #diagnosis
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... Mycoplasma pneumoniae infection ... antibiotics are the most ... spherocytosis) • Infections ... #hematology #anemia
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
hypogammaglobulinemia -> increased infection ... history of recurrent infections ... disease • Infectious ... community-acquired infections ... #diagnosis #management
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
- Differential Diagnosis ... Myelofibrosis Infectious ... Tissue Damage: • Post-op ... Iron deficiency anemia ... Algorithm #Causes #Hematology
Aplastic Anemia - Illness Script
Signs and symptoms:
 • Recurrent infections from neutropenia
 • Mucosal bleeding from
Aplastic Anemia ... : • Recurrent infections ... Diagnosis: • Pancytopenia ... #diagnosis #management ... #treatment #hematology
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
- Differential Diagnosis ... Thrombocytosis): • Acute infection ... malignancies • Anemia ... sarcoidosis) • Post-splenectomy ... #Causes #hematology