Thrombocytosis: Difference between revisions

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**** Growth factors
**** Growth factors


== Clinical Presentation ==
== Clinical Manifestations ==


* Primary/clonal more likely if:
* Primary/clonal more likely if:

Revision as of 10:52, 2 August 2020

Differential Diagnosis

  • Primary
    • Essential thrombocythemia
    • Polycythemia vera
  • Secondary
    • Transient process
      • Acute blood loss
      • Rebound from thrombocytopenia
      • Acute phase reactant in acute infection or inflammatory processes
      • Response to exercise
    • Sustained process
      • Iron deficiency (most common reason for referral to hematologist)
      • Hemolytic anemia
      • Asplenia
      • Cancer
      • Chronic inflammatory or infectious diseases
        • Connective-tissue disorders
        • Temporal arteritis
        • Inflammatory bowel disease
        • Tuberculosis
        • Chronic pneumonitis
      • Drug reactions
        • Vincristine
        • All-trans-retinoic acid
        • Cytokines
        • Growth factors

Clinical Manifestations

  • Primary/clonal more likely if:
    • Digital ischemia
    • Cerebrovascular ischemia
    • Large-vessel thrombosis
    • Bleeding
    • Splenomegaly
    • Giant platelets

Investigations

  • Labs
    • CBC
    • Peripheral film, for platelet size
    • ESR/CRP, rule out underlying inflammatory disorder
  • Other