Patterns of Cervical Lymph Node Metastases in Primary and Recurrent Papillary Thyroid Cancer

[摘要] The incidence of thyroid cancer is rising in the United States with papillary thyroid cancer (PTC) being the most common type.We performed a retrospective study of 49 patients with PTC who underwent 57 lateral neck dissections (NDs).The extent of NDs varied, but 29 of 57 (51%) consisted of levels II–V. Twelve of 57 (21%) NDs consisted of levels I–V. Twelve of 57 (21%) NDs consisted of levels II–IV.One of 57 (1.8%) necks involved only levels I–IV.One of 57(1.8%) necks involved only levels I–V. One of 57(1.8%) necks involved only levels III–V.Two (3.5%) double-level (III–IV) neck surgeries were also performed. Metastatic PTC adenopathy was confirmed pathologically in 2%-level-I, 45%-level-II, 57%-level-III, 60%-level-IV, and 22%-level-V necks. Level-V was positive in 21% of primary and 24% of recurrent groups (P=0.76).Comparing primary and recurrent disease, there was no difference in nodal distribution or frequency for levels I, II, III, and V.Level-IV was more common in the recurrent cases (P=0.05). Based on the pathologic distribution of nodes, dissection should routinely include levels II–IV and extend to level-V in primary and recurrent cases. Our data does not suggest routine dissection of level-I.

[学科分类] 肿瘤学