As childhood cancer survival improves, it is important to monitor health of survivors, because they have an elevated risk of developing subsequent primary neoplasms (SPN). Population-based cancer registries can monitor long-term risk of cancer among childhood cancer survivors (CCS). However, the ability to study this risk depends on the quality, completeness, and longitudinal extent of registration whereby information on treatment, stage, and predisposing characteristics is systematically recorded.
Silva et al. (Wed,) studied this question.