Carcinoid cancer I assume
The mother of my Goddaughter has this and has since the mid 90s
It’s brutal but some live a very long time with its ebb and flow
You will be very thin though because Sir Charles always gets fed first
Cancer gloms all nutrition it can into dying cells that it’s cannibalizing
You can throw it off changing eating habits but it’ll catch on
Even Ketogenic diet? Ketogenic Diet