King Charles supposedly has Pancreatic Cancer according to this article

[yellowdogintexas]

80. some types do not show symptoms until it is quite advanced

I lost a good friend to it. Her first chief complaint was back pain. After a number of failed solutions to the back pain, an MRI revealed a fracture in her spine - which indicates metastis. An oncologist friend told me her primary was either lung, liver or pancreas , and that the bone fractures are not primary

Treatment then was much different than now, but even now her case would have been difficult due to it being so advanced