Leukemia - 20-Year Comparative Survival and Mortality Analysis by Age, Sex, Race, Cohort Entry Time-Period, Disease Duration, Major Subtypes and Other Histologic Categories: A Systematic Review of 142,713 Cases for Diagnosis Years 1975-2022.

Leukemia is a broad term for a heterogenous group of hematologic malignancies that arise from the abnormal proliferation of leukocytes. It occurs most often in adults older than 55, but also is the most common cancer in children younger than 15, and accounts for more than 25% of cancer deaths in this age group. In this United States long term retrospective population-based analysis of 143,713 microscopically confirmed leukemia cases, mortality and survival study, 1975-2022, data is derived from the NCI Surveillance, Epidemiology and End-Results Programs, SEER*Stat software versions 8.4.5 and SEER*Stat 9.0.40.0, and, SEER Registry - Incidence - SEER Research Data, 8 Registries, Nov 2024 Sub (1975-2022). This comparative cohort entry time-period analysis is intended to provide age-adjusted epidemiologic, demographic, short and long-term survival and mortality data for convenient reference by all physicians, scientists, insurance underwriters, and others interested in cancer mortality follow-up.