Hi and welcome to HCM.
No.It sounds to me like pancreatitis
cause by hyperglicemia. This isnt uncommon. Cancer isnt the first thing to think of. But further tests arenecessary, at least ultrasounds and lypase /amylase
levels. Ct scan
would be the best to rule out malignancy, but I dont think this is cancer. Blood sugar must be regulated in his age. It can cause serious complications. Wish you good health.