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Hypersplenism

Hypersplenism is a topic covered in the 5-Minute Clinical Consult.

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Basics

Description

  • Hypersplenism is defined as overactivity of the spleen and presents as the following:
    • Splenomegaly (commonly but not always)
    • Cytopenias with respective bone marrow hyperplasia of precursors
    • Resolution of cytopenias with splenectomy
  • Splenomegaly is not synonymous with hypersplenism. Overactivity of the spleen can occur without enlargement, as is seen in immune thrombocytopenic purpura (ITP) and autoimmune hemolytic anemia. Similarly, splenomegaly is not always associated with hypersplenism.

Epidemiology

May be as common as 30–70% in patients with cirrhosis and portal hypertension (HTN)

Etiology and Pathophysiology

  • Enlargement of the spleen results in sequestration of formed blood elements, leading to peripheral cytopenias and concomitant bone marrow precursor hyperplasia.
  • Many of the common etiologies are listed below. Almost any process involving the spleen or the hematologic system can result in hypersplenism:
    • Infectious
      • Tuberculosis
      • Brucellosis
      • Malaria
      • Leishmaniasis
      • Ehrlichiosis
      • Schistosomiasis
      • Histoplasmosis
      • Candidiasis
      • Viral
      • Syphilis
      • Infective endocarditis
    • Hematologic
      • Myeloproliferative disorders
      • Polycythemia vera
      • Primary hypersplenism
      • ITP
      • Hemolytic anemias
    • Neoplastic
      • Hematologic malignancies
      • Melanoma
      • Various carcinomas
      • Metastatic cancers
    • Storage diseases
      • Gaucher disease
      • Niemann-Pick disease
      • Amyloidosis
      • Glycogen storage disease
    • Inflammatory
      • Sarcoidosis
      • Systemic lupus erythematosus
      • Felty syndrome
    • Congestive
      • Cirrhosis
      • Heart failure
      • Portal or splenic vein thrombosis
      • Congenital malformations of the portal vein

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Citation

Stephens, Mark B., et al., editors. "Hypersplenism." 5-Minute Clinical Consult, 27th ed., Wolters Kluwer, 2019. Medicine Central, im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/117256/all/Hypersplenism.
Hypersplenism. In: Stephens MB, Golding J, Baldor RA, et al, eds. 5-Minute Clinical Consult. 27th ed. Wolters Kluwer; 2019. https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/117256/all/Hypersplenism. Accessed June 27, 2019.
Hypersplenism. (2019). In Stephens, M. B., Golding, J., Baldor, R. A., & Domino, F. J. (Eds.), 5-Minute Clinical Consult. Available from https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/117256/all/Hypersplenism
Hypersplenism [Internet]. In: Stephens MB, Golding J, Baldor RA, Domino FJ, editors. 5-Minute Clinical Consult. Wolters Kluwer; 2019. [cited 2019 June 27]. Available from: https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/117256/all/Hypersplenism.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Hypersplenism ID - 117256 ED - Stephens,Mark B, ED - Golding,Jeremy, ED - Baldor,Robert A, ED - Domino,Frank J, BT - 5-Minute Clinical Consult, Updating UR - https://im.unboundmedicine.com/medicine/view/5-Minute-Clinical-Consult/117256/all/Hypersplenism PB - Wolters Kluwer ET - 27 DB - Medicine Central DP - Unbound Medicine ER -