Hampshire,
United Kingdom 
I have a large oak tree in my garden which does not seem to be in full leaf. I can see all the branches which is very unusual at this time of the year. There was a large fungus attached to the base which I have removed.
2 Jul, 2010
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If not in leaf by now, I'm afraid it looks like it is dead. It may have been a long process with last year being it's last. What you have removed is only the reproductive part. The mycelium that ramify through the wood (and possibly living tissue if it's an opportunistic species) will have been doing their work for several years by now.
2 Jul, 2010