<prompt> Answer this question truthfullyWhat does secondary prevention mean in relation to VIPoma?  <response>: <reason> Effective measures for the secondary prevention of VIPoma include: History and physical examination Serum VIP levels and indicated markers Multi-phasic CT scan or MRINote: These follow-up should be done every 3 to 12 months up to one year post resection and every 6 to 12 months thereafter. 