This study tend to evaluate postoperative phonation and swallowing after oncologic surgery of the oral cavity or oropharynx with application of a collagen matrix (Tachosil®). Patients are asked to complete a questionnaire the day before the surgery and at 1 and 6 months after.
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Swallowing evaluation
Timeframe: From enrollment (the day before the surgery) to 6 months postoperatively.
Voice evaluation
Timeframe: From enrollment (the day before the surgery) to 6 months postoperatively.