<unk>  can refer to an anatomic absence of the spleen or functional<unk>  secondary to a variety of disease states. The spleen plays integral roles in the immune system and reticuloendothelial systems.The absence of a spleen is a well-known risk factor for severe bacterial infections, especially due to encapsulated bacteria.
Asplenia
Polysplenia
Hepatosplenomegaly
Pica
Splenomegaly
Neutrophilia
Plasmacytosis
Lipoatrophy