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作者对５２例肺中叶病变行外科治疗，其中支气管肺癌２７例，肺转移癌３例，错构瘤２例，良性病变２０例（支气管扩张６例，中叶综合征、结核各３例，炎性假瘤、肺动静脉瘘、肺大泡各２例，支气管结石、支气管肺囊肿各１例）。恶性肿瘤占５７．７％。中叶肺癌从发现病变到确诊时间平均为４个月，最长达１．５年。中叶肺切除占６７．３％，中叶部分切除或单纯肿瘤切除占１３．５％，中叶合并其它肺叶切除占１５．４％，右全肺切除占３．８％。作者认为中叶病变复杂，需综合分析方可作出正确诊断。特别指出中叶肺癌误诊率高，确诊不了的中叶病变应及时手术探查，中叶肺癌如能早期诊断及手术治疗，可彻底切除并多保留健康肺组织。
The authors performed surgical treatment of 52 cases of lung middle lobe lesions, including 27 cases of bronchial lung cancer, 3 cases of lung metastases, 2 cases of hamartoma, and 20 cases of benign lesions (6 cases of bronchiectasis, 3 cases of middle lobe syndrome, and 3 cases of tuberculosis respectively. Pseudotumor, pulmonary arteriovenous fistula, and bullae in 2 cases, bronchial stones, and bronchial cyst in 1 case respectively. Malignant tumors accounted for 57.7%. The average time from the discovery of lesions to the diagnosis of lung cancer in the middle lobe is 4 months, and the longest is 1.5 years. Pulmonary resection accounted for 67.3% in the middle lobe, 13.5% in the middle lobe or with simple tumor resection, 15.4% in the middle lobe with other lobar resections, and 3.8% in the right pneumonectomy. The author believes that the lesions in the middle leaves are complex and comprehensive analysis is required before making a correct diagnosis. It is particularly pointed out that the misdiagnosis rate of lung cancer in the middle lobe is high, and the lesions in the middle lobe that cannot be diagnosed should be promptly examined by surgery. If lung cancer in the middle lobe can be diagnosed early and treated surgically, it can be completely removed and more healthy lung tissue can be preserved.