Table 2.

Median value of serum calcitonin (Ctn) and CEA based on tumor size number of metastatic lymph node and N category.

Tumor Size (mm)	Ctn Value (Median and IQR Range, pg/mL)	CEA Value (Median and IQR Range, ng/mL)
≤10	60 (24–94)	5.5 (1.3–7)
11–20	234 (125–472)	17.9 (13.9–50.7)
21–39	630 (503–722)	43.7 (28–67.1)
≥40	739 (447–1189)	52.0 (37.6–59.9)
Number of metastatic lymph node
0	88.4 (27–282)	7.0 (1.9–28)
1–5	108.0 (57.4–269)	9.6 (1.8–35.2)
>5	520.5(272–657.5)	43.2 (19.2–67.1)
Lymph node status
N0	88.4 (27–282)	7 (1.9–28)
N1a	98.1 (57.4–145)	2.6 (1–16.5)
N1b	520.5 (118–722)	53.8 (19.2–67.1)