Table 2.

Specimen findings

	Group A (N = 45)	Group B (N = 44)	p value
Resected lung volume (cm3)	59.02 ± 52.84	17.81 ± 14.67	<0.001
Maximum tumor-pleura distance (mm)	6.46 ± 8.01	3.36 ± 5.34	0.034
Maximum tumor size (mm)	16.36 ± 10.1	9.64 ± 5.76	<0.001
Wedge number	1.42 ± 0.69	1.2 ± 0.46	0.837
Final pathology
Infectious lesion	9	9
Benign nodule	7	7
Metastatic lesion	19	20
Primary lung cancer	10	8

Group A: patients with chest drain placement; Group B: patients without chest drain placement