Thanks Petey & David..

David,
Yep -Radiation Therapy starts from Saturday.

You have rightly pointed that despite of no lymph node involvement and surgical removal of cancerous tumor -they are going ahead with the radiation therapy.

And I must point out a fact that specialists (oncologists & radiation therapists) have deemed this to be a *precautionary* measure to eliminate all the possibilities of a spread (though none of the tests indicate it as yet). Perhaps, this is the aggressive approach to treatment --OR-- they suspect something "very" microscopic which is not detected from any of the scans/pathology (apologies for my ignorance)..

As I can ascertain from Jeff's comments above -there are patients who have received the radiation therapy till neck even after being diagnosed with no lymph node involvement.. (please take care to correct me if I have misunderstood something).

Any thoughts?