what part of the body is the spleen
How the Body Works The Spleen. The spleen is a small organ located behind the stomach in the left, upper part of the abdomen. A mass of lymphoid tissue, it contains two distinct areas, the white pulp and the red pulp.The white pulp is distributed, as tiny nodules of lymphatic tissue, among the red pulp, which fills all the remaining space.ow the Body Works The Spleen. The spleen is a small organ located behind the stomach in the left, upper part of the abdomen. A mass of lymphoid tissue, it contains two distinct areas, the white pulp and the red pulp.