Malignant tumors of childhood.

In the past 20 years, cancer in the age group, 0-14 years has become the second leading cause of death by disease. At some ages, notably between 5 and 14, it may be the leading cause of death by disease. Leukemia is the most frequent form of cancer in childhood, and tumors of the brain are in second place. An attempt should be made to categorize more accurately tumors stated in reports as "miscellaneous," since in the reports analyzed herein, 15.8 per cent of all malignant lesions were so classified.