Figure 1. The features of chest CT image corresponding to the patient’s condition. (A) A larger pulmonary nodule was obviously detected as arrow shown in the lung window. (B) A larger pulmonary nodule was detected as arrow shown in the mediastinal window.(C-D) The right pleural effusion was accompanied by the formation of air-fluid level, which was partially encapsulated, and the right lung was infected with atelectasis after the first operation as arrow shown.