我院近年收治肺癌32例,其中特殊表现者11例,全部误诊。现分析如下。一、以肌无力综合征起病患者男性,56岁。3月前四肢无力,坐位、卧位起立时甚为困难。说话无力。声音渐低,烦躁。轻度咳嗽。两次胸透(-)、胸片正常。体检:淡漠。肌无压痛,肌力Ⅳ级。入院后一月胸片示左肺门阴影增宽,CT 示肺癌。本例误诊原因为过分依赖早期胸透、胸片阴性结果和医生对肌无力综合征认识不足,说明肺癌肌无力综合征可在呼吸道症状与X 线征象之前出现。二、以血尿为首发症状患者男性,68岁。无痛性肉眼全程血尿2天。无 In our hospital, 32 cases of lung cancer were treated in recent years, 11 of them were special performers, and all were misdiagnosed. The analysis is as follows. First, the onset of myasthenia gravis male is 56 years old. Three months ago, the limbs were weak and it was very difficult to sit up or lie down. Speak poorly. The voice is getting low and irritable. Mild cough. Thoracic (-) and chest radiographs were normal. Physical examination: indifferent. Muscle without tenderness, muscle strength IV. One month after admission, the chest radiograph showed that the shadow of the left hilum was widened and CT showed lung cancer. The reasons for misdiagnosis in this case are over-reliance on early chest x-ray, negative chest X-ray results, and insufficient knowledge of physicians on myasthenia gravis syndrome, suggesting that myasthenia gravis syndrome may precede respiratory symptoms and X-ray signs. Second, male patients with hematuria as the first symptom, 68 years old. Painless, gross hematuria for 2 days. no