41. In most individuals, the portal vein is formed by the union of the superior mesenteric vein and the splenic vein. 42. Finally, the occurrence of splenic rupture with mild blunt abdominal trama in those convalescing from infectious mononucleosis is well reported. 43. Splenic infarction occurs when the splenic artery or one of its branches are occluded, for example by a blood clot.44. Splenic infarction occurs when the splenic artery or one of its branches are occluded, for example by a blood clot. 45. Abdominal pain due to hypersplenism and splenic infarction and right-upper quadrant pain caused by gallstones are major clinical manifestations. 46. SMZL in bone marrow displays a nodular pattern with morphology similar to what is observed in the splenic hilar lymph nodes. 47. Examples of an end artery include the splenic artery that supplies the spleen and the renal artery that supplies the kidneys. 48. As more agricultural settlers moved into western Kansas, pressure increased on the Kansas State Legislature to do something about splenic fever. 49. Cytologic aspirates are usually not recommended as the accuracy rate for a positive diagnosis of malignant splenic disease is approximately 50 %. 50. A whey protein diet has been shown to enhance splenic immune response to sheep red blood cells ( SBRC ) in mice.