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A Study of Frequency in Malignant Tumors of Children.

Journal of the Korean Pediatric Society 1984;27(7):711-717.
Published online July 31, 1984.
A Study of Frequency in Malignant Tumors of Children.
Myung Ho Lee, Seong Ja Jeon
Department of Pediatrics, Chonju Presbyterian Medical Center
소아 악성 종양의 발생빈도에 관한 조사 연구
이명호, 전성자
전주예수병원 소아과
We obtained following results by analysis of 355 cases of malignant tumors in patients under 15 years of age who were admitted to the Chonju Presbyterian Medical Center from January 1971 to December 1982. The diagnosis was confirmed by pathologic studies. 1)The most common malignant tumor was leukemia(44.9%). The next in order were lymphoma (14.9%), brain tumor(7. 0%), Wilms tumor(7.0%), soft tissue sarcoma(5.9%) retinoblastoma(4.5%), bone tumor(3.7%), gonadal and germ cell tumor(3.4%) and liver tumor (3.1%). 2)The male to female ratio was 1.8:1. 3)The frequency of malignant tumors among total pediatric inpatients was 1.4%. There was no annual increase in the number of malignant tumors related to total inpatients. 4)About 37.7% of malignant tumors were found before 5 years of age. In Wilms tumor, neuroblastoma and retinoblastoma, most were under 5 years of age while in Hodgkin disease, 57% of cases were older than 10 years of age and. in osteogenic sarcoma, all 11 cases were older than 10 years of age. 5)There was no significant difference in frequency related to area. 6)Acute non-lymphocytic leukemia among all leukemia was relatively more prevalent compared to U.S.A, and European countries. 7)The frequency of Hodgkin disease and Ewing sarcoma was lower compared to U.S.A, and European countries.
Key Words: Incidence, Childhood malignancies

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