3.

非小细胞肺癌纵隔转移与非转移淋巴结形态学特征比较(x±s)

Comparison of morphologic indexes between metastatic and non-metastatic mediastinal lymph nodes in non-small cell lung cancer (x±s)

Group	L/mm	S/mm	S/L
L, long-axis diameter; S, short-axis diameter; S/L, ratio of short-axis diameter to long-axis diameter.
Metastatic (n=49)	13.10±2.99	9.90±2.55	0.76±0.09
Non-metastatic (n=114)	11.38±2.91	7.72±1.96	0.69±0.08
t	3.432	5.899	5.075
P	0.001	＜0.001	＜0.001