抄録
Japanese Society of Pediatric Surgeons started the Registry in 1971 and continued to have nation-wide registration on pediatric surgical tumors. Seven District Registration Centers worked effectively for the purpose. Follow-up studies on the cases in the first ten years of registration were analysed in this report. Two-year tumor-free survival rate was used for this study. Originally, the numbers of five main tumors, registered from 1971 through 1980 were 2,436 including 1,036 neuroblastomas, 495 nephroblastemas, 294 liver tumors, 405 teratoma group tumors and 206 rhabdomyosarcomas. However, the cases followed-up in this study were rather smaller in number. Tumor-freer 2-year survival rates were as follows; 33.6% (196/584) in neuroblastoma, 60.2% (163/271) in nephroblastoma, 41.8% (46/110) iu hepatic malignant tumors, 59. 3% (67/113) and 35. 8% (35/99) rhabdomyosarcoma. In those 5 tumors, 2-year tumor-free survival rates were studied in relation to the year of treatment, sex, age, histological types and related histopathological factors, original site of occurrence, stage of disease, and interrelationship of each item. The Pediatric Tumor Registry has been supported by the Children's Cancer Association of Japan.
