Abstract
Splenectomy is a surgical procedure indicated in a variety of medical conditions including trauma. Post-operatively, there is a lifelong risk of developing overwhelming sepsis from encapsulated bacteria, most commonly due to Streptococcus pneumoniae. Splenic autotransplantation has been proposed as a method to recover splenic function in patients requiring splenectomy with otherwise normal spleens. This study aims to systematically review the literature to determine the efficacy of spleen autotransplantation. MEDLINE, PubMed and the Cochrane Library were searched for all studies assessing splenic autotransplantation (January 1947 to July 2018). Data were extracted on study characteristics, outcomes assessed, including spleen scintigraphy results, blood film counts and serum immunoglobulin (Ig) levels. Data were obtained from 18 primary studies. All studies demonstrated return of regenerated spleen tissue in the majority of their patients (95.3%) on spleen scintigraphy. In 12 studies, 90.2% of patients had blood films return to normal following transplantation. Ig levels were shown to return to normal in all 12 studies where it was assessed. In 11 studies, 3.7% of patients had post-operative complications. In five studies, 1.3% of patients had post-operative infections in the follow-up period. Splenic autotransplantation is a safe procedure with minimal complications that can return splenic filtration function and Ig levels to normal ranges. It has not been confirmed whether autotransplantation provides meaningful protection against overwhelming post-splenectomy infections.
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