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[Cholelithiasis and homozygote drepanocytosis in children in Dakar (Senegal)]
Insights
Cholelithiasis (gallstones) affects 9.4% of Senegalese children with sickle-cell anemia (SCA). Prevalence increases with age, linked to chronic hemolysis and higher red cell volume, necessitating regular ultrasounds for early detection.
Area of Science:
- Hematology
- Pediatrics
- Gastroenterology
Background:
- Sickle-cell anemia (SCA) is associated with chronic hemolysis, increasing cholelithiasis (gallstone) risk.
- Gallstones in SCA patients are often asymptomatic but can lead to complications like acute cholecystitis.
Purpose of the Study:
- To determine the prevalence of cholelithiasis in Senegalese children and adolescents with SCA.
- To identify factors associated with cholelithiasis in this pediatric population.
Main Methods:
- Retrospective analysis of clinical, biological, and ultrasonographic data from 106 SCA patients (11 months to 22 years).
- Systematic examinations included abdominal ultrasound to detect gallstones.
Main Results:
- Cholelithiasis was found in 9.4% of SCA patients.
- Prevalence increased with age; no association with gender, ethnicity, or socioeconomic status.
- Patients with gallstones had higher mean red cell volume and more frequent transfusions and pain crises.
Conclusions:
- Cholelithiasis prevalence is relatively low in Senegalese SCA patients, possibly due to the Senegal haplotype.
- Advanced age and severe chronic hemolysis are key risk factors.
- Recommend annual abdominal ultrasounds for SCA patients over 5 years old and those with right upper quadrant pain.
Background:
Cholelithiasis is a well recognized complication of sickle-cell anemia (SCA) because of chronic hemolysis. It is usually asymptomatic but may result in acute cholecystitis or cholangitis. The aim of this study was to assess prevalence of cholelithiasis and its associated factors among Senegalese children and adolescents with SCA.
Patients And Methods:
We analyzed the follow-up records and results of systematic clinical, biological and ultrasonographic examinations in 106 patients with SCA aged 11 months to 22 years (median: 10 years, 6 months), followed up in the Albert-Royer Children's Hospital (Dakar).
Results:
Cholelithiasis was detected in 9.4% of the patients. Gender, ethnic group, geographic origin and socioeconomic conditions did not have any association with cholelithiasis frequency. The youngest patient with cholelithiasis was 7 years old, and prevalence of cholelithiasis increased with age. The mean age at the beginning of SCA follow-up was higher among patients with cholelithiasis. They were more frequently transfused and tended to present more frequent pain crises and other complications of SCA. We found no spontaneous clinical manifestations attributed to cholelithiasis. Nevertheless, provoked right upper quadrant pain was more frequently observed in patients with cholelithiasis. Fetal hemoglobin, steady-state hemoglobin, reticulocytes count, serum bilirubin, alkaline phosphatase and transaminase levels were not significantly different in these patients, compared to the others. However, those with cholelithiasis had significantly higher mean red cell volume.
Conclusion:
Prevalence of cholelithiasis appears relatively low in Senegalese patients with SCA, probably owing to the tolerance of the Senegal haplotype. Advanced age and severe chronic hemolysis are etiologic factors in evidence. We recommend systematic abdominal ultrasound at least once a year for patients older than 5 years, or when right upper quadrant pain is observed. Cholecystectomy should be performed in cases of cholelithiasis in order to prevent complications.
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