What is the definition or description of: splenic infarction?

An infarction. Is the interruption of blood flow, as in myocardial infarction (mi) stopping blood flow to the cardiac muscle. The tissue beyond the blockage will die if the blood supply is not restored. In this case the involved organ would be the spleen.
Description below. An infarct is simply tissue that is devoid of blood circulation, usually leading to death of the cells downstream to the blockage. The spleen is part of the immune system in the left upper quadrant. A splenic infarct is when a part or all of the spleen's circulation is interrupted causing part of the spleen to shrink or die. It is often associated with pain in the area and sometimes fever.