1临床资料患者女,54岁,农民。咽部堵塞不适感1月余。1个月前无明显诱因出现咽部堵塞感,伴吞咽不适,无吞咽疼痛,无发热、恶心呕吐、呼吸困难、咽部疼痛,呼吸可,无咳嗽咳痰。当地医院以“口腔溃疡”予对症支持治疗后症状缓解,但咽部白斑无明显消退,本科以“咽部溃疡原因待查”收入院。发病以来,患者 1 clinical data Female patient, 54 years old, farmer. Pharyngeal clog discomfort more than 1 month. 1 month ago no obvious incentive to pharyngeal blockage, swallowing discomfort, no swallowing pain, no fever, nausea and vomiting, dyspnea, throat pain, breathing can be, no cough and sputum. The local hospital to “oral ulcer ” to support symptomatic symptomatic relief of symptoms, but the pharyngeal leukoplakia no significant regression, undergraduate to “the cause of pharyngal ulcers ” income hospital. Since the onset of the patient