Pompidou had bone cancer and terminated his presidency by deciding to stop the treatment, in other words by deciding to die.
Mitterrand had cancer too and he survived in the presidency 14 years and did the same thing as Pompidou as soon as he had reached the end of his second term.
I guess Trump will have to be in a wheelchair soon. That would be a killing condition for him because he would never psychologically accept to be like Roosevelt who survived four elections but only three and let’s say a half terms in his wheel chair.
Presidential or royal medicine can be morphine and addiction to it day after day and no one knows and no one cares.
Have a good convalescence, but keep in mind presidents cannot get any convalescence. Look at Kennedy and his back problem.