D73: Diseases of spleen

D73.0: Hyposplenism

The spleen is on the top left side of the abdomen. Old blood cells are broken down in the spleen. Furthermore, defense cells are stored. If the defense cells are needed, they are then released from the spleen into the blood.

The spleen’s function may become restricted after an inflammation, for example. The spleen sometimes needs to be partly or fully surgically removed. When the spleen’s function is restricted, the ability to protect against some pathogens may become inadequate. This makes the person more susceptible to infection than usual.