Dad has 5cm tumour in sigmoid colon

My mother-in-law was diagnosed with a large tumor nearly blocking her colon at 84. She had Alzheimer's disease and could not recall who anyone was and did not retain information for 5 minutes.  She was simply unable to understand or tolerate the treatment.  We chose to decline treatment and placed her in hospice. Recommendations in your Dad's case will depend on what's needed.

I'm really sorry this is happening to your family.  It's a very tough situation 

Thanks, it’s all a bit overwhelming at the moment.  It’s just so hard knowing if the choice you make will be the right one.  

If you make the choice with love in your heart and trying to do what he would have chosen if he were able to choose, then the choice is the right one. You can't go wrong when you approach with that mindset.

Don't let anyone tell you what you should do. You know him better than your friends and the medical workers. 

Thank you, that makes a lot of sense and is really helpful!