Thyroidectomy and Lymph Node Dissection in Papillary Thyroid Carcinoma

Table 4

Relationship between lateral node metastasis and tumor size in 1231 patients who were diagnosed as negative for metastasis on preoperative ultrasonography but underwent prophylactic lateral node dissection.

Number of metastases (%)
Tumor size (cm)	0	1–4	5 or more	Total
1.0 or less	78 (59.5)	43 (32.8)	10 (7.6)	131
1.1–2.0	191 (47.9)	143 (35.8)	65 (16.3)	399
2.1 or more	172 (24.5)	299 (42.7)	230 (32.8)	701