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asplenia / polysplenia syndromes

probably different degrees of the same disorder

  • asplenia (Ivemark syndrome, bilateral right sidedness)
    • more severe
    • right lung lobar anatomy bilaterally, bilateral eparterial bronchi
    • associated with cardiac, GI/GU and situs anomalies
    • Howell-Jolly bodies - RBC inclusions

  • polysplenia (bilateral left-sidedness)
    • left lung lobar anatomy bilaterally, bilateral hyparterial bronchi
    • multiple spleens/splenules
    • bilateral SVCs, azygos continuation of IVC
    • associated with cardiac(less common than in asplenia), GI/GU and situs anomalies

Charles E. Kahn, Jr., MD  -  3 February 1995
Last updated:  1 October 2013


Related CHORUS documents:
accessory spleen
Heinz / Howell-Jolly bodies
spleen cyst
total anomalous pulmonary venous return (TAPVR)
azygos continuation of interrupted IVC
cold spleen lesion


Copyright © 2013, Charles E. Kahn, Jr.