No help here. Other than to offer moral support. You're doing wonderfully and the best you can in supporting your dad in any way you can. I hope you're able to find out what's going on with his shoulder and that all goes well as far as his cancer. Is it treatable? There's been a lot going on in your lives and my heart goes out to both of you.

As other's here have noted it sounds like his primary care doc has dropped the ball. I'd be asking for another opinion and a referral to a pain specialist. With everything that's available today there's no reason your dad should suffer as he is. Please, keep us posted on what is done?

Barbara