神经鞘瘤是发生于神经鞘膜的肿瘤 ,大多为良性 ,恶性者少见。现将搜集的 2例少见部位恶性神经鞘瘤报告如下。例 1　女 ,44岁。半年前患结核性胸膜炎 ,经抗痨治疗后病情好转 ,1周前出现发热、盗汗及胸痛。体检 :一般情况可 ,左锁骨上扪及一蚕豆大淋巴结 ,心、肺听诊及实验室检查 Schwannoma is a tumor that occurs in the nerve sheath, most of which are benign and malignant. Now collected in 2 cases of rare malignant nerve sheath tumor report as follows. Example 1 female, 44 years old. Six months ago suffering from tuberculous pleurisy, the condition improved after anti-tuberculosis treatment, 1 week ago, fever, night sweats and chest pain. Physical examination: the general situation can be, the left clavicle palpable large beans and lymph nodes, heart, lung auscultation and laboratory tests