Table 3. Evaluation of the surgical outcomes of thoracic duct terminal adhesion release in the treatment of primary chylopericardium with different non-enhancing MRL staging.

Variable	Type I or II (n=22)	Type III (n=17)	Type IV (n=17)	P value
				All	Type I or II vs. III	Type I or II vs. IV	Type III vs. IV
Turbidity of the mediastinal fat space	2 (9.09)	5 (29.4)	2 (11.8)	–	–	–	–
Decreased	2 (100)	1 (20)	0 (0)	0.17	0.14	0.33	0.71
No change	0 (0)	3 (60)	2 (100)	0.37	0.43	0.33	>0.99
Increased	0 (0)	1 (20)	0 (0)	>0.99	>0.99	–	>0.99
Ground glass opacities	5 (22.7)	7 (41.2)	9 (52.9)	–	–	–	–
Decreased	5 (100)	5 (71.4)	6 (66.7)	0.45	0.47	0.26	0.64
No change	0 (0)	0 (0)	0 (0)	–	–	–	–
Increased	0 (0)	2 (28.6)	3 (33.3)	0.45	0.47	0.26	0.64
Large grid shadow	7 (31.8)	4 (23.5)	13 (76.5)	–	–	–	–
Decreased	6 (85.7)	1 (25)	1 (7.7)	0.001	0.09	0.001	0.43
No change	1 (14.3)	1 (25)	8 (61.5)	0.11	0.62	0.07	0.29
Increased	0 (0)	2 (50)	4 (30.8)	0.14	0.11	0.25	0.58
Small grid shadow	2 (9.1)	0 (0)	9 (52.9)	–	–	–	–
Decreased	2 (100)	0 (0)	0 (0)	0.02	–	0.02	–
No change	0 (0)	0 (0)	3 (33.3)	>0.99	–	>0.99	–
Increased	0 (0)	0 (0)	6 (66.7)	0.182	–	0.18	–
Thickening of bronchial vascular bundles	4 (18.2)	4 (23.5)	11 (64.7)	–	–	–	–
Decreased	3 (75)	1 (25)	1 (9.09)	0.04	0.49	0.03	0.48
No change	1 (25)	1 (25)	6 (54.5)	0.55	0.79	0.57	0.57
Increased	0 (0)	2 (50)	4 (36.4)	0.51	0.43	0.52	0.54
Pleural effusion	6 (27.3)	5 (29.4)	3 (17.6)	–	–	–	–
Decreased	4 (66.7)	0 (0)	0 (0)	0.03	0.06	0.17	–
No change	0 (0)	1 (20)	1 (33.3)	0.47	0.46	0.33	0.46
Increased	2 (33.3)	4 (80)	2 (66.7)	0.40	0.24	0.52	0.64

Values are presented as n (%). MRL, magnetic resonance lymphangiography; T2WI-MRI, T2 weighted imaging-magnetic resonance imaging.