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听神经鞘瘤能渐进地引起听觉损失和/或前庭机能障碍。通常认为这是由占据内听道的肿瘤的肿块作用而引起内耳血供和/或淋巴流的机能不全以及轴索不同程度的退变所致。作者检查了来自两例听神经鞘瘤病人的前庭感觉上皮的超微结构。病例1为患有右侧听神经鞘瘤的33岁男性,第一次经颅后窝进路切除术时的症状是:听觉损失6个月,不平稳感觉3个月,无耳鸣。切除的肿瘤大小为2×1.5cm。术后8个月复发行二期经迷路进路切除术。病例2为患有左侧听神经鞘瘤的52岁
Schwannomas can progressively cause hearing loss and / or vestibular dysfunction. It is generally believed that this is caused by the mass of tumors that occupy the internal auditory canal causing insufficiency of the blood supply and / or lymphatic flow in the inner ear and varying degrees of degeneration of the axon. The authors examined the ultrastructure of the vestibular sensory epithelium from two patients with acoustic nerve sheath tumors. Case 1 was a 33-year-old male with a right schwannoma. The first transcranial posterior resection showed symptoms of hearing loss of 6 months, uneasy sensation of 3 months and no tinnitus. The resected tumor size was 2 × 1.5 cm. Eight months after the recurrence of the second phase of labyrinth excision. Case 2 was 52 years old with schwannoma on the left