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Ladu, Adama, Aiyenigba, Abiola, Adekile, Adekunle and Bates, Imelda 
ORCID: https://orcid.org/0000-0002-0862-8199
(2021)
'The spectrum of splenic complications in patients with sickle cell disease in Africa: a systematic review'. British Journal of Haematology, Vol 193, Issue 1, pp. 26-42.
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Abstract
The majority of the global population of sickle cell disease (SCD) patients resides in Africa. Individuals with this condition are at great risk of serious infections and early mortality secondary to splenic dysfunction without preventative measures. This review investigated the spectrum of splenic complications encountered in SCD among populations in Africa. We systematically searched several databases for all articles published through March 3, 2020. We included 55 studies from 14 African countries. This review reveals the difference in frequency of splenic complications in SCD in Africa when compared with their counterparts in the United State and Europe. While several studies (n = 45) described splenomegaly with a prevalence of 12% to 73% among children, and 4% to 50% among adults with HbSS, the reported prevalence for acute splenic sequestration crisis (n = 6 studies) and hypersplenism (n = 4 studies) was <10% and <5% respectively. A total of 30 surgical splenectomy was reported across eight studies. Only two (3.7%) studies provided data on spleen function. A conflicting pattern was observed amongst studies that evaluated the relationship between splenomegaly and the presence of bacterial and malaria infections. This review reveals the paucity of studies describing the role of SCD‐induced splenic dysfunction in morbidity and infection related mortality in Africa.
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