Wimberly and colleagues surveyed 3145 families affected by childhood cancer to examine whether gestational substance use was associated with specific childhood cancer subtypes. The authors revealed an association between maternal use of illicit drugs (e.g., cannabis) and an elevated occurrence of several CNS tumors believed to arise from disordered neurogenesis. Results complement recent links made between gestational cannabis use and other neurological disorders, including autism. Given changes in legal status and in attitudes about its use, fetal exposure to cannabis is rising. These findings should spur further molecular investigations and increased dialogue about potential risks associated with gestational cannabis use.

Breast cancer recurrence is important to evaluate in cancer survivorship studies; however, recurrence is difficult to obtain without conducting extensive, manual medical record review. Aiello Bowles and colleagues extended and evaluated previously developed algorithms for ascertaining breast cancer recurrences using administrative healthcare data. By combining existing algorithms, the authors identified...

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