confused!!

After a trip to slc yesterday we still have a problem. The doctor showed us where the mass was and told us that it could not be drained with a needle. He said that it would just come back so it needed to be taken out and I would be in the hosiptal for one night and on cruthes for 10 days. But he thinks the pain from my knee is because of my back! Now he wants a MRI of the back. We ask many questions and felt like it is still a guessing game. So iam waiting to hear from my doctor in Logan. That's all folks