My boyfriend has just undergone chemotherapy and radiotherapy for head and neck cancer .... he has had tonsils removed, lymph glands removed and still has the sore throat when swallowing , a feeling s if there is something at the back of the throat . A few weeks ago he had a camera up the nose and down the throat and found to have a lesion on the vocal cord ...he's waiting to go have another biopsie on this , do you think this could be another case of cancer ?