| asplenia | Congenital absence of the spleen. Functional asplenia, absence of splenic function due to spontaneous infarction of the spleen, as occurs in sickle cell anaemia. (05 Mar 2000) |
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| asplenia / polysplenia | <radiology> Probably different degrees of the same disorder, asplenia, more severe, Heinz and Howell-Jolly bodies, polysplenia (12 Dec 1998) |
| asplenia syndrome | <syndrome> Syndrome seen in patients who had no functional spleen, either due to surgical removal of disease (e.g., sickle cell anaemia); includes increased susceptibility to bacterial infection, especially pneumococcal infection. (05 Mar 2000) |