肺错构瘤是肺内最常见的良性肿瘤。在报告的51例中,除2例位于支气管内外,其余均在肺实质内;31例无症状,另20例的症状是胸闷、胸痛、咳嗽、气短和咯血。肺错构瘤由软骨、脂肪、平滑肌和呼吸道上皮所组成。X线片上,肺实质型的表现为界线清楚的圆形或椭圆形阴影,29％的病例可看到钙化影。由于难以与肺癌相鉴别,肺错构瘤应手术治疗。肿瘤摘除术或肺楔形切除术应为首选。 Pulmonary hamartoma is the most common benign tumor in the lung. Of the 51 reported cases, except 2 cases were located inside and outside the bronchus, the rest were in the lung parenchyma; 31 cases were asymptomatic, and the other 20 cases had chest tightness, chest pain, cough, shortness of breath, and hemoptysis. Pulmonary hamartoma consists of cartilage, fat, smooth muscle and respiratory epithelium. On the X-ray, the lung parenchyma showed a clear circular or elliptical shadow on the boundary, and calcification was seen in 29% of cases. Because it is difficult to differentiate from lung cancer, pulmonary hamartoma should be treated surgically. Tumor resection or wedge resection should be the first choice.