aged; ageusia; article; biopsy; burn; cachexia; case report; chemexfoliation; clinical article; coronavirus disease 2019; death; disease burden; dyspepsia; dysphagia; endoscopy; food intake; histopathology; human; human tissue; hypopharynx squamous cell carcinoma/di [Diagnosis]; hypopharynx squamous cell carcinoma/rt [Radiotherapy]; male; palliative therapy; pandemic; physician; positron emission tomography; quality of life; radiation; radiation oncologist; shared decision making; smoking; thorax radiography; throat; ultrasound; very elderly; antacid agent/pv [Special Situation for Pharmacovigilance]; percutaneous endoscopic gastrostomy tube