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spleen
(splēn)
a large, glandlike, but ductless organ in the upper part of the abdominal cavity, surrounded by a dense capsule and located on the left side, beyond to the cardiac end of the stomach. It is the largest
collection of reticuloendothelial cells in the body and is composed of spongelike tissue of two types: red pulp, which is the dark reddish brown substance filling the interspaces of the sinuses of the spleen, and white pulp, which consists of sheaths of lymphatic tissue surrounding the splenic arteries. After digestion in the stomach and during certain disease processes, the spleen enlarges. Called also lien. adj., splenŽic., adj.
accessory spleen
a small mass of tissue elsewhere in the body, histologically and functionally identical with that composing the normal spleen.

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