Lymphatic plastic bronchitis and primary chylothorax: A study based on computed tomography lymphangiography

Table 2 Computed tomography lymphangiography features and conventional chest computed tomography features in the three groups, n (%)

Imaging features	Group A (n = 20)	Group B (n = 41)	Group C (n = 10)	P value
Thoracic duct outlet obstruction	14 (70.0)	33 (80.5)	8 (80.0)	0.674
Location of lymphatic reflux
Peritracheal region	18 (90.0)a	15 (36.6)a	8 (80.0)	< 0.001
Pleura	6 (30.0)a	33 (80.5)a	9 (90.0)	< 0.001
Pericardium	6 (30.0)	6 (14.6)	4 (40.0)	0.134
Hilum	16 (80.0)a	11 (26.8)a	7 (70.0)	< 0.001
Pulmonary abnormalities
Ground-glass opacity	19 (95.0)a	18 (43.9)a	8 (80.0)	< 0.001
Atelectasis	4 (20.0)a,b	26 (63.4)a	7 (70.0)b	0.003
Interlobular septal thickening	12 (60.0)a	11 (26.8)a	3 (30.0)	0.037
Bronchovascular bundles thickening	14 (70.0)a	6 (14.6)a	4 (40.0)	< 0.001
Localized changes in mediastinum	14 (70.0)a	14 (34.1)a	7 (70.0)	0.012
Diffuse changes in mediastinum	6 (30.0)	5 (12.2)	3 (30.0)	0.146
Cystic lesions in the axilla	2 (10.0)	6 (14.6)	2 (20.0)	0.796
Cystic lesions in the chest wall	0 (0.0)	2 (4.9)	2 (4.9)	< 0.999

^aP < 0.05, indicates a statistically significant difference between group A and group B.

^bP < 0.01, indicates a statistically significant difference between group B and group C.

Unless otherwise indicated, data are number of patients.