Table 1.

Patients’, congenital lung malformation, operative and postopertative characteristics, divided into two groups, asymptomatic versus symptomatic

	Asymptomatic=137 (%)	Symptomatic=49 (%)	P
Patients’characteristics
Prenatal diagnosis	134 (98)	15 (31)	0.001
Age at surgery (mean±SD)	11.8±27.81 mo	58.83±67.3 mo	0.001
Weight at surgery (mean±SD)	10.2±6.6 kgs	14.8±12.4 kgs	0.86
Symptoms
Pneumonia		18 (37)
Respiratory distress	15 (30)
Pneumothorax		10 (20)
Thoracic pain		6 (13)
Associated malformations	12 (9)	6 (12)	0.57
CPAM characteristics
Laterality
Right	71 (52)	22 (45)	0.50
Left	68 (49) (two bilateral)	27 (55)	0.50
Location
Upper	36 (26)	22 (43)	0.03
Middle	8 (6)	8 (14)	0.06
Lower	101 (74)	20 (39)	0.001
Multi-lobar	8 (6)	1 (2)	0.67
Diameter (mean±SD)	4.5±2.5 cms	4.9±2 cms	0.44
Histology
CCAM	65 (47)	17 (35)	0.13
Hybrid lesions	6 (4)	0	0.34
Intralobar Sequestration	35 (25)	9 (18)	0.33
Extralobar Sequestration	20 (14)	3 (6)	0.13
Bronchogenic cyst	1 (1)	2 (5)	0.17
Lobar emphysema	22 (16)	15 (30)	0.03
Operative data
Surgical technique
Thoracotomy	76 (55)	28 (57)	0.86
Thoracoscopy	61 (45)	21 (43)	0.86
Duration of procedure (mean±SD)	105.1±43.5 min	116.8±52.8 min	0.11
Type of procedure
Lobectomy	5 (4)	2 (4)	1.00
Segmentectomy	8 (6)	2 (4)	1.00
Wedge resection	114 (83)	40 (82)	0.82
Others	10 (7)	5 (10)	0.47
Postoperative data
Duration of postoperative drainage	6.0±5 days	6.2±4.5 days	0.80
Days in intensive care	3.1±2.5 days	7.0±14 days	0.002
Length of hospital stay	13.9±15.1 days	19.2±23 days	0.07
Duration of follow-up (mean±SD)	30.7±32.4 mo	21.6±22.1 mo	0.07
Postoperative complications	10 (7)	10 (20)	0.32
Pneumonia	3 (2)	4 (8)	0.01
Persistent pneumothorasx	4 (3)	4 (8)	0.21
Respiratory distress	3 (2)	2 (4)	0.60
Reintervention	0	3 (6)	0.01

P<0.05 was considered as statistically significant. CPAM: Congenital pulmonary airway malformation, SD: Standard deviation