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A Study of Clinical Features of Acute Tumor Lysis Syndrome in Children

Journal of the Korean Pediatric Society 2000;43(7):952-958.
Published online July 15, 2000.
A Study of Clinical Features of Acute Tumor Lysis Syndrome in Children
Ick-Jin Song, Young-Tak Lim
Department of Pediatrics, College of M edicine, Pusan National University, Pusan, Korea
종양 용해 증후군의 임상적 고찰
송익진, 임영탁
부산대학교 의과대학 소아과학교실
Abstract
Purpose
: Tumor lysis syndrome is characterized by hyperuricemia, hyperphosphatemia, hyperkalemia and hypocalcemia due to destruction of tumor cells. The purpose of this study is to estimate in children the incidence, onset time, differences in outcomes between hemodialysis and conservative therapy, and predictive factor of tumor lysis syndrome before treatment with chemotherapy.
Methods
: Subjects were 108 children who had received induction chemotherapy from January 1993 to December 1998. We reviewed 12 patients who developed tumor lysis syndrome, and retrospectively analyzed their data on WBC, Hb, platelet, LDH, uric acid, phosphorus, potassium, calcium, BUN and creatinine.
Results
: Tumor lysis syndrome was observed in 12(11.1%) cases. Seven out of 12 patients (58.4%) were in the age group of 6 to 10 years. The incidence of tumor lysis syndrome was 9.4% in acute leukemia, 30.8% in malignant lymphoma and 6.5% in solid tumor. Before chemotherapy, tumor lysis syndrome occurred in 3 cases(25.0%). Nine cases(75.0%) developed after initiation of chemotherapy. LDH was significantly higher in the group with tumor lysis syndrome(2790.8¡¾1882.1U/L) than the group without(777.6¡¾618.5U/L)(P < 0.05). Of 12 patients, there were increased levels of phosphorus and uric acid in 11 cases, creatinine in 9 cases, potassium in 6 cases, and calcium was decreased in 8 cases. There was no death during treatment. Duration of treatment until improvement was longer in the hemodialysis group(7.6¡¾2.7 days) than in the conservative therapy group(5.7¡¾1.5 days).
Conclusion
: Tumor lysis syndrome occurred mostly within 24-48 hours after chemotherapy of acute lymphocytic leukemia and Burkitt`s lymphoma. LDH before chemotherapy was helpful in predicting the occurrence of tumor lysis syndrome in children.
Key Words: Tumor lysis syndrome, Children, Burkitt` s lymphoma, Acute lymphocytic leukemia, LDH


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