Gestational diabetes mellitus and risk of incident primary cancer: A population-based retrospective cohort study.

Highlights A large retrospective study indicates no association between GDM and most types of cancer; this is in contrast to a few smaller studies that have suggested an association with cancer. An increased risk of thyroid cancer in mothers with GDM was demonstrated. While this risk requires further investigation, it may be advisable for physicians to consider regular thyroid examination for patients with a GDM history.