I said I'd let you know how things went.
Everything went very smoothly at home. The younger 2 seemed unaffected and the older 2 coped well.
The op went well too and the surgeon didn't remove the whole muscle, just the outer layer. This meant that my time on a zimmer frame was much shorter than it might have been! I'm on a walking stick now.
The really good news is that the tumour was not as aggressive as they thought and so the risks of the cancer spreading anywhere else are very small. This also means I haven't got to have radiotherapy either. The only downside is that I am left with a large cavity in my hip which is permanent and rather grotesque. I guess I'll get used to it eventually.
The Royal Marsden in Chelsea is an excellent place. Their pain policy seems to be "you mustn't have any" and the knowledge and care of all the staff is really good. The food isn't too impressive though.
I'm now going for regular check-ups and just hope the tumour doesn't regrow.
Ginette