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The spleen in children
1Children's Hospital, Denver, Colorado, USA.
Insights
The spleen plays a key role in blood cell removal and fighting infections. While splenectomy is effective for pediatric disorders, it carries risks; alternatives and tailored treatments for sickle cell disease are crucial.
Area of Science:
- Pediatric Hematology
- Immunology
- Surgical Innovation
Background:
- The spleen is vital for blood cell clearance and immune defense against encapsulated bacteria.
- Splenectomy, though effective for pediatric conditions, presents risks like overwhelming infection.
- Functional asplenia is common in children with sickle cell anemia, necessitating preventative measures.
Purpose of the Study:
- To review the spleen's functions and the implications of splenectomy in pediatric disorders.
- To explore alternative spleen-preserving treatments.
- To differentiate the splenic function and infection risk in sickle cell anemia versus sickle-hemoglobin C disease.
Main Methods:
- Literature review of splenic function, splenectomy, and its alternatives.
- Analysis of pediatric disorder treatments involving the spleen.
- Examination of evidence regarding functional asplenia in sickle cell disease variants.
Main Results:
- Surgical splenectomy is effective but carries lifelong infection risks.
- Alternative spleen-preserving procedures include laparoscopic, partial splenectomy, embolization, and autotransplantation.
- Penicillin prophylaxis is vital for infants with sickle cell anemia but may not benefit children with sickle-hemoglobin C disease until later.
Conclusions:
- Management of pediatric patients with splenic dysfunction requires careful consideration of risks and benefits.
- Spleen-preserving techniques offer alternatives to conventional splenectomy.
- Tailored prophylactic strategies, particularly regarding penicillin, are essential for children with different sickle cell genotypes.
Abstract:
The spleen contributes importantly to the normal and pathologic removal of blood cells from the circulation and to defense against infection with encapsulated bacteria. Surgical splenectomy provides efficacious treatment for a number of pediatric disorders but is associated with perioperative morbidity and a life-long risk of overwhelming infection. Alternatives to conventional splenectomy include laparoscopic splenectomy, partial splenectomy, partial splenic embolization, and autologous splenic transplantation. Sickle cell disease is the most common cause of functional asplenia in children. Asplenia develops during infancy in many infants with sickle cell anemia, and prophylactic penicillin markedly reduces mortality from pneumococcal infection. In contrast, recent evidence suggests that children with sickle-hemoglobin C disease do not develop functional asplenia before 3 to 4 years of age and thus may not benefit from penicillin prophylaxis. Recommendations for the treatment of asplenic patients include pneumococcal, Haemophilus influenzae type b, and meningococcal immunizations, antimicrobial prophylaxis for selected patients, and prompt evaluation and aggressive treatment of acute febrile illness.