Sorry it has taken so long to reply so I hope i can still be of some help.I found out that I have the same problem as your Dad last month.Once he sees the surgeon he may need further testing such as CT Scan, MRI, Ultrasound. This was the worst time for me as the waiting to get something done as scary. But I found out that the test are important as the surgeon needs to find out the extent of the tumour. He may require Radiation or Chemo before surgery can take place.I'm now at the stage of starting Radiation and the Chemo which has reduced my fear a bit as I now know something is happening, it was the waiting to get to this stage which was the worst. And all this has happened in four weeks of being diagnosed. I hope this is of some help please let me know if I can help you or your Father in anyway.Oldman (Kevin)