Clara,
It is so important Bob gets any news that pertains to his present situation in a sensitive delicate way as you wish. I was faced with a similar situation after Gene's first turb,,I had all the info, Gene did not know as he was drugged still when the surgeon saw him. I kept it to myself for 3 days( OVER THE WEEKEND) then asked to come in for an appt. to tell him, in case questions were asked.
This is just my opinion, I would call the Doctor that you are more comfortable with, discuss it with him, and set up the appt. to hear what he needs to hear just from him. Its to insensitive for someone to just blurt out info without considering the patients mind set. Why mention hospice if its not important at this minute, what do you think? Ginger