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原发性肺肉瘤罕见,约占肺恶性肿瘤的10％。本文报告5例,其临床病理特征:(1)发病年龄比肺癌年轻,5例平均37岁;(2)症状与肺癌相似,临床多诊断为肺癌,但痰检癌细胞均阴性;(3)肿瘤在肺实质内呈膨胀性生长,界清或有假包膜。X线显示为密度浓而均匀,边缘锐利,无明显分叶或毛刺征之肿块影。(4)瘤体较大,5例平均直径为5.8cm;(5)各类型肺肉瘤预后不同,其中恶性纤维组织细胞瘤最差,无5年生存者。总的5年生存率为28.8％;(6)早期彻底手术切除为主要治疗手段。
Primary lung sarcomas are rare, accounting for about 10% of lung malignancies. This article reports 5 cases, its clinical pathological characteristics: (1) younger than the age of onset of lung cancer, 5 cases were average 37 years old; (2) symptoms and lung cancer are similar to the clinical diagnosis of lung cancer, but the sputum cancer cells were negative; (3) Tumors show expansive growth in the lung parenchyma, with clear borders or pseudocapsules. The X-rays showed dense and uniform density, sharp edges, and no masses with distinct lobes or burrs. (4) The tumor size was larger, and the average diameter of 5 cases was 5.8 cm. (5) The prognosis of each type of pulmonary sarcoma was different. The malignant fibrous histiocytoma was the worst, and there was no 5-year survival. The overall 5-year survival rate was 28.8%; (6) Early surgical resection was the main treatment.