I agree with Anne-Marie. To be frank, we have a tough enough fight without having to fight to keep the so called friends.
I had my parents stay with me after my surgery, which everyone knew, and a (sadly) large number of friends never even bothered to call to see how the surgery went. Others went out of their way to bring soup, and cook meals for my parents.
My best friend was completely freaked out, and no idea how to handle things, but she went over the top - she paid for a cleaning lady to come, paid for a haircut in advance of my surgery, etc.. I actually had to tell her that while I loved that she wanted to help, it was making me feel like a sick person. It was enough that she came to see me every day.
Really, all we want is to feel like we matter, and a card, a call or a visit I found to be the most important things that showed me I mattered.
To hell with the rest of 'em!