肺原发恶性纤维组织细胞瘤文献报道很少,现将我们遇到1例报告如下。患者,男,33岁,主因干咳,右肺疼痛,咯血一个月就诊。于1978年2月,劳累后引起右胸不适,干咳加重,痰中带血丝。胸 X 光片显示右肺中3×3cm圆形肿物,边界清楚,密度均匀,无分叶,诊为结核球,抗痨治疗两年,无明显疗效。1981年10月,再次照 X 光胸片检查,发现右肺中叶肿物增大,约 Primary pulmonary fibrous histiocytoma of the lung is rarely reported in the literature. We now report one case as follows. The patient, male, 33 years old, was mainly due to a dry cough and had pain in the right lung. He had hemoptysis for one month. In February 1978, right chest discomfort was induced after exertion, the dry cough increased, and blood stained sputum was present in the sputum. The chest X-ray showed a 3×3cm round mass in the right lung with clear boundaries, uniform density, and no lobulation. The diagnosis was tuberculosis. The anti-tuberculosis treatment for two years had no significant effect. In October 1981, the chest radiograph was examined again and it was found that the middle lobe mass in the right lung increased.