Error in Figure. In the article by Kosuda et al titled "Feasibility and Cost-effectiveness of Sentinel Lymph Node Radiolocalization in Stage N0 Head and Neck Cancer," published in the October issue of the ARCHIVES (2003;129:1105-1109), in Figure 1 on page 1107, the labels for the bottom 2 arms of the upper tree should have read "True Negative" and "False Positive." This correction was made previously to online versions of this article.