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n.
surgical removal of the spleen. This is sometimes necessary in the emergency treatment of bleeding from a ruptured spleen and in the treatment of some blood diseases. Splenectomy in children may diminish the immune response to infections.
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sple·nec·to·my (sple-nekґtə-me) [splen- + -ectomy] excision or extirpation of the spleen.Medical dictionary. 2011.