例 1,男 ,2 5岁。右耳听力下降、耳闷 4月。发病前有急性上呼吸道感染史 ,伴低音调耳鸣 ,无回吸涕血、鼻塞、耳痛、头痛等症状。按“卡他性中耳炎”治疗 ,行右咽鼓管吹张 ,鼓膜穿刺抽液 ,均无效。 2个月前右耳开始有分泌物 ,呈黏性。患者 10年前右耳曾不适 ,流血 ,无流脓史。查 Example 1, male, 25 years old. Right ear hearing loss, ear boring April. There was a history of acute upper respiratory tract infection prior to the onset of illness, accompanied by low-pitched tinnitus, no resumption of blood stasis, nasal congestion, earache, and headache. According to the treatment of catarrhal otitis media, the right eustachian tube was blown and the tympanic membrane was punctured. Two months ago, the right ear began to have secretions and became sticky. The patient had a bad ear 10 years ago, bleeding, no history of pus. check