Table 3.

Tumor Histology and Predictors of Contralateral PTC for Tumors < 1 cm

	Positive Contralateral lobe (n=17)	Negative Contralateral lobe (n=53)	P value
Follicular variant (%)	6 (35)	8 (15)	0.09
Multifocal (%)	9 (53)	11 (21)	<0.02
Tumor capsule invasion (%)	1 (5.9)	4 (7.5)	NS
Vascular invasion (%)	0 (0)	1 (1.9)	NS
Extrathyroid extension (%)	1 (5.9)	5 (9.4)	NS
Margin < 1mm (%)	2 (12)	6 (11)	NS
Positive lymph node (%)	5 (29)	9 (17)	NS
Lymph node recurrence (%)	0 (0)	1 (1.9)	NS

PTC=Papillary thyroid cancer