Table 1.

Clinicopathological features of 76 PTC patients (97 nodules) with and without ETE.

	ETE	Without ETE	P value
Age (yr)	43.27 ± 11.89	48.62 ± 12.07	.144
Gender
Female	20	28	.301
Male	11	17
Primary tumor size(cm)	1.65 ± 0.68	1.14 ± 0.45	.001
Lymph node metastasis	17	30	.634
Tumor location
Right thyroid	21	32	.713
Left thyroid	17	23
Isthmus	2	2

ETE = extrathyroidal extension, PTC = papillary thyroid carcinoma.