Table 2.

Size of Apertures on the Pulmonary Ligaments

	Size of apertures on the left pulmonary ligament (μm)							Size of apertures on the right pulmonary ligament (μm)
Case	Median	Mean	Minimum	Maximum	SE	SD	(n)	Median	Mean	Minimum	Maximum	SE	SD	(n)
1	4.00	5.04	2.25	10.00	1.28	3.13	6	5.00	7.00	5.00	10.00	1.22	2.74	5
2	5.00	4.17	2.50	5.00	0.83	1.44	3	12.50	12.08	2.50	20.00	3.25	7.97	6
3	3.25	3.25	2.50	4.00	0.75	1.06	2	5.00	5.00	2.50	7.50	2.50	3.54	2
4	7.50	9.21	2.00	20.00	2.40	6.34	7	5.00	9.78	2.00	35.00	2.47	10.48	18
5	2.50	3.00	2.00	5.00	0.68	1.35	4	2.38	2.79	2.00	5.00	0.47	1.14	6
6	2.25	2.20	2.00	2.50	0.09	0.21	5	2.50	4.54	2.00	12.50	1.52	4.02	7
7	2.50	2.97	2.00	5.00	0.40	1.19	9	5.00	4.92	2.25	7.50	1.52	2.63	3
8	5.00	5.83	2.50	10.00	2.20	3.82	3	3.75	4.38	2.50	7.50	1.20	2.39	4
9	3.00	7.10	2.50	15.00	2.74	6.14	5	2.50	3.33	2.50	5.00	0.83	1.44	3
10	3.75	3.63	2.00	5.00	0.80	1.60	4	4.50	4.38	2.50	6.00	0.75	1.49	4
11	2.50	3.33	2.50	5.00	0.83	1.44	3	2.50	5.00	2.50	10.00	2.50	4.33	3
12	n/e	n/e	n/e	n/e	n/e	n/e	n/e	7.25	10.65	5.00	27.50	2.29	7.23	10
13	5.00	6.50	2.50	12.50	1.70	3.79	5	n/e	n/e	n/e	n/e	n/e	n/e	n/e
14	n/e	n/e	n/e	n/e	n/e	n/e	n/e	3.75	5.63	2.50	12.50	2.37	4.73	4
15	8.75	9.17	2.50	15.00	1.79	4.38	6	n/e	n/e	n/e	n/e	n/e	n/e	n/e

n/e=not evaluated because of pleural adhesion. (n)=frequency of apertures observed per 1 mm².