肺神经内分泌癌镜下组织形态有时与恶性淋巴瘤难以区别，须用免疫组化标记加以确诊。现报道２例如下：例１　男性，４８岁，于１９９７年４月初无诱因间歇性发作胸痛感，于同年６月入院。Ｘ线：左肺舌叶肺癌。ＣＴ：左上肺舌段支气管开口片有一肿块，考虑为肺癌。支气管镜检查 Pulmonary neuroendocrine carcinomas are sometimes indistinguishable from malignant lymphomas and must be diagnosed with immunohistochemical markers. 2 cases are reported below: Example 1 Male, 48 years old, had no cause of intermittent chest pain at the beginning of April 1997 and was admitted to hospital in June of the same year. X-ray: left lung tongue and lung cancer. CT: A lump in the bronchial opening of the upper left lung segment, considered as lung cancer. Bronchoscopy