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作者报道一例侵犯面神经的颗粒性肌母细胞瘤(granular cell mvoblastoma),文献中尚无类似病例。此患者诊断为特发性面瘫,作面神经减压术时,始发现为颗粒性肌母细胞瘤。一例6岁女孩,患水痘两周后,出现左侧面瘫,4天后全瘫,经强的松连续口服2周,面瘫无减轻。耳神经学检查:听力和泪液机能正常;左侧镫骨肌反射消失;肌电图示电反应消失及神经纤维变性;颞骨断层片未发现异常;电兴奋实验的结果支持手术探查。经乳突径路行面神经探查,发现从锥隆起到茎乳孔之间的面神经干上,
The authors report a case of granular cell myoblastoma that invaded the facial nerve and there are no similar cases in the literature. This patient was diagnosed as idiopathic facial paralysis, facial nerve decompression surgery, initially found to be granular myoblastoma. A 6-year-old girl suffered from left facial paralysis after two weeks of chickenpox and full paraplegia after 4 days. She continued oral administration of prednisone for 2 weeks without any loss of facial paralysis. Ear neurology examination: normal hearing and tear function; left stapedius reflex disappeared; electromyography showed disappearance of electrical response and nerve fiber degeneration; no abnormality of the temporal bone slice; electrical excitation test results support surgery exploration. The mastoid path line facial nerve exploration and found that from the conical bulge to the facial nerve stem between the dry hole,