Incidence of childhood tumors in Shanghai, 1973-77.

Data of the Shangai Tumor Registry were analyzed for incidence of cancer in children under 15 years of age, 1973-77. The incidence of all malignant neoplasms combined was 104.7 per million boys and 89.2 per million girls. Leukemia, brain tumors, and lymphomas comprised 70% of all childhood tumors in Shangai. Compared with U.S. whites, Shangai children had higher rates of myeloid leukemia and liver cancer and lower rates of lymphoid cancers and tumors of the kidney, eye, soft tissue, and testis. Effects of migration on tumor rates among Chinese children are largely unknown and merit additional study.