Splenomegaly is an enlargement of the spleen, which usually lies in the left upper quadrant (LUQ) of the human abdomen. It is one of the four cardinal signs of hypersplenism, the other three being cytopenia(s), normal or hyperplastic bone marrow, and a response to splenectomy. Splenomegaly is usually associated with increased workload (such as in hemolytic anemias), which suggests that it is a response to hyperfunction. It is therefore not surpri...
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