The spleen is an organ that filters the blood, stores blood cells, removes old red blood cells, and produces certain white blood cells.
Review Date 9/9/2017
Updated by: Debra G. Wechter, MD, FACS, general surgery practice specializing in breast cancer, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.