Clinical Research Directory

Inclusion Criteria: * ≥18 years at the time of enrollment. * Eastern Cooperative Oncology Group (ECOG) performance status score of 0-2. * Life expectancy ≥6 months. * Patients with histologically or cytologically confirmed squamous cell carcinoma of the head and neck (oral cavity, oropharynx, larynx, and hypopharynx). * Patients who have undergone surgery for head and neck squamous cell carcinoma within 6 weeks and are assessed postoperatively as having high-risk factors requiring radiotherapy ± chemotherapy. Exclusion Criteria: * Suffering from tumors in areas other than the oral cavity, oropharynx, larynx, and hypopharynx, such as nasopharyngeal carcinoma or other unknown primary head and neck tumors. * Having any condition that affects gastrointestinal absorption, such as dysphagia, malabsorption, or uncontrollable vomiting; currently undergoing tube feeding or parenteral nutrition. * Suffering from anorexia due to neurosis, mental illness, or difficulty eating due to pain. * Suffering from Acquired Immune Deficiency Syndrome (AIDS).