Table 4.

Comparison and post-hoc analysis of the maximum short axis of the thymic vein.

	Maximum short axis of the thymic vein (mm, mean ± SD)	≥2 mm maximum short axis (%)
Thymic carcinoma (n = 12)	2.42 ± 0.46	10 (83%)
Thymoma (n = 34)	1.71 ± 0.35	5 (15%)
Thymic cysts (n = 17)	1.50 ± 0.51	2 (12%)
P value	<.001∗†	<.001∗††
Post-hoc analysis	P value†††	P value††
Thymic carcinoma vs thymoma	<.001∗∗	<.001∗∗
Thymic carcinoma vs thymic cysts	<.001∗∗	<.001∗∗
Thymoma vs thymic cysts	.011∗∗	>.99

^∗Statistically significant.

^∗∗Statistically significant after family-wise error correction by Bonferroni's method.

^†Kruskal–Wallis test.

^††Fisher exact test.

^†††Mann–Whitney U test.