Table 1.

Clinicopathologic variables

Variable	Median (range)
Age (years)	35.2 (3.4,72.3)
Follow up (years)	9.3 (3,31.5)
Gender (Female)	37 (56%)
Prophylactic intent	14 (21%)
Known Structural disease	10 (15%)
Tumor size (cm)	1.5 (0.1,7.5) cm
Node positive	36 (55%)
Number of positive nodes	1 (0,49)
Persistent biochemical disease*	36 (55%)
Preop calcitonin (pg/ml), n=41	636 (0,9600)
Preop CEA (ng/ml), n=17	29.4 (0.9,179)
Post op calcitonin (pg/ml), n=61	16 (0,9750)
Post op CEA (ng/ml), n=45	8.4 (0.8,1207)

^*Persistent biochemical disease was defined as an elevation in the first postoperative calcitonin level