肺原发性平滑肌瘤较罕见,首次由Forkel在1901年报道,国内吴遐1958年报道2例后,迄今共18例,我院1970年～1984年收治3例,现报告如下。例1,女性,10岁,发热,咳嗽,痰中带血3个月,经抗菌素治疗后症状缓解,于1970年4月27日入院。查体:两面颊潮红,两肺可闻及干性罗音,右肺呼吸音明显减低。痰涂片未找到抗酸杆菌。胸片:右肺下叶见一薄壁之囊状阴影,其内有致密块状阴影,断层片示右肺门稍大。术前诊断:1.右肺结核球,2.右肺囊肿,1970年5月18日行开胸探查,发现右肺下叶背段肿物,有囊性感,随支气管加压,肿物增大,行右肺下叶切除术。巨检为右肺下叶背段肺实质圆形肿物,直径3.2cm,与肺组织 Pulmonary primary leiomyomas are rare and were first reported by Forkel in 1901. After two cases were reported by Wu Qi in 1958 in China, there have been 18 cases so far, and 3 cases were treated in our hospital from 1970 to 1984. The present report is as follows. Example 1, female, 10 years old, with fever, cough, sputum with blood for 3 months, symptom relief after treatment with antibiotics, admitted to hospital on April 27, 1970. Examination: flushing on both cheeks, dry rales can be heard in both lungs, and breath sounds in the right lung are significantly reduced. No acid-fast bacilli were found in the smears. Chest radiograph: A thin-walled cystic shadow is seen in the lower lobe of the right lung. There is a dense blocky shadow in the right lung and the tomogram shows that the right hilum is slightly larger. Preoperative diagnosis: 1. Right pulmonary tuberculosis, 2. Right lung cysts, open chest exploration on May 18, 1970, found that the right lung lower lobe tumor, with cystic sex, with bronchial pressure, tumor enlargement Right lung lower lobe resection. Giant examination for the right lung lower back lung segmental tumor mass, diameter 3.2cm, and lung tissue