Hi, I had a golf ball sized brain tumour removed 7 weeks ago. From the MRI the doctors were unsure what type of tumour it was and said they normally can make a good guess. Since then they've been trying to figure out what type it is. Throughout this process they've told me 3 types they think it might be and then have changed their minds. I haven't had an update in weeks now and I'm just wondering if this is rare?

How likely is it that I just won't find out what type it is? Is it possible for it to be an unknown type? If that's the case how long many months would they run tests before letting me know that they will never know?

The surgeon removed 100% of it and said a month ago he thinks I won't need radiation - will this be the case if its an unknown type? 

Thanks