Chemotherapy
toxicity, hematological toxicity, hepatorenal function impairment
ORAL MUCOSITIS
A chemotherapy regimen might be concurrent chemotherapy or induction chemotherapy plus concurrent chemotherapy. In this study, the observation of oral mucositis was terminated at the end of radiotherapy. All patients used a 3‐week regimen of platinum‐based drugs. Chemotherapy was suspended if severe hematological toxicity or hepatorenal function impairment occurred during treatment. Symptomatic and supportive treatment was performed in time for acute toxicity. The treatment plan was delayed or stopped according to the patient's condition, if necessary.