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Yeungnam Univ J Med > Volume 31(2); 2014 > Article
Yeungnam University Journal of Medicine 2014;31(2):75-81.
DOI: https://doi.org/10.12701/yujm.2014.31.2.75    Published online December 31, 2014.
Significance of serum total bilirubin as a prognostic factor for hemophagocytic lymphohistiocytosis in childhood.
Hea Kyoung Yang, Gui Joung Song, So Eun Jun
Department of Pediatrics, Pusan National University School of Medicine, Busan, Korea. newwife99@hanmail.net
Abstract
BACKGROUND: Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening disease. Despite of proper treatment and improving treatment regimens, HLH patients still show a fatal prognosis. Therefore the evaluation of prognostic factor is important and there are many studies about hyperbilirubinemia as a prognostic factor in HLH. So we studied the prognostic value of hyperbilirubinemia in HLH children. METHODS: A retrospective analysis was performed about 33 patients who were diagnosed with HLH at Pusan National University Hospital and Yangsan Pusan University Hospital between January 2000 to December 2012. We reviewed the clinical characteristics, laboratory findings, and results of treatment to identify hyperbilirubinemia as a prognostic factor in HLH patients. RESULTS: The median age of patients at diagnosis was 32 months. Most of patients presented with fever, pale appearance, abdominal pain and jaundice. Forty-eight point five percentage of patients showed normal serum bilirubiln level (<2.0 mg/dL) and 51.5% showed hyperbilirubinemia (> or =2.0 mg/dL). In normal serum bilirubin group, 1 patient (6.3%) was relapsed and 1 patient (5.9%) was relapsed in hyperbilirubinemia group. In the hyperbilirubinemia group, the mortality was higher than the normal bilirubin group but, there was no statistical significance. CONCLUSION: As a prognostic factor serum bilirubin at diagnosis in HLH patients, there was no significant correlation between hyperbilirubinemia and poor outcome. But, our study has a limitation that the number of patients is too small and almost showed good prognosis.
Key Words: Hemophagocytic lymphohistiocytosis, Serumbilirubin, Prognostic factor


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