Exception from pathology confirmation of tumor recurrence is accepted for patients who originally had pathologically confirmed SCC of the Head and Neck, the new tumor is located in the head and neck area and it is clinically considered as a recurrence of the original tumor, and a tumor biopsy is technically difficult and would expose the patient to unjustified risk. The treating physicians should agree and document the clinical definition of tumor recurrence and should document the increased risk for biopsy.