3.1 Patient population and characteristics
Of the 24 patients, 14 were male and 10 were female. Twenty-three patients were diagnosed with prenatal sonography. The most common respiratory symptoms were pneumonia, respiratory distress and shortness of breath. All of the patients had suffered from neonatal pneumonia; two patients had pneumonia with respiratory distress, and eight had pneumonia with shortness of breath. Two patients had mediastinal deviation due to large lung lesions. Four patients with CCAM located in the upper or middle lobes underwent lobectomy, and 20 underwent lung-preserving wedge resection in the lower lobe, regardless of whether the lesion was on the left or right side. The final pathological result was 20 cases of CCAM and 4 cases of CCAM with PS. One patient was found to have congenital chylothorax after the operation and healed after sufficient drainage. One patient had postoperative complications of a air leaks and healed spontaneously after conservative treatment. Details of the patient population and the characteristics of the thoracoscopic resection and open resection groups are shown in Table 1. Some variables were statistically analyzed, and there was no statistically significant difference between the two groups.
The median follow-up time was 25 months (range, 1-47 months), and none of the patients experienced postoperative recurrence, shortness of breath, difficulty breathing after activity, or repeated pneumonia. One patient who was treated with open resection had a slightly sunken chest while breathing.