儿童外耳道及中耳横纹肌肉瘤误诊一例

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男,10岁。因左耳持续性流脓伴听力下降2周来诊。患儿2周前无明显诱因出现左耳流脓伴听力减退,有时耳鸣,无头痛、耳痛、眩晕感,睡眠、饮食、大小便均正常。既往无类似病史。专科查体:双耳廓无畸形,右耳道、鼓膜正常,乳突发育正常。左耳道内充满粉色肉芽及脓性分泌物,鼓膜看不清,乳突无红肿、压痛。纯音测听:右耳听力正常;左耳气导60dB,骨导正常。中耳CT示:左侧外耳道、中耳乳突被软组织影充填,听小骨未见明显破坏;右耳正常。
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