Aim: We aimed to determine the impact of diabetes mellitus (DM) on survival of patients with neuroendocrine tumors (NETs) and of NETs on glycemic control.
Patients & Methods: Patients with newly diagnosed NETs with/without DM were matched 1:1 by age, sex and diagnosis year (2005-2017), and survival compared (Kaplan-Meier and Cox proportional hazards). Mixed models compared hemoglobin A (HbA) and glucose during the year after cancer diagnosis.