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	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

In the April 1999 issue of the ARCHIVES, Som et al¹ present radiologic criteria for classifying cervical lymph nodes on cross-sectional imaging studies to correspond to the clinically accepted level system. We believe that there is some ambiguity in distinguishing level V nodes from supraclavicular nodes.

Based on the American Academy of Otolaryngology–Head and Neck Surgery 1998 classification,² Som and colleagues indicate that the inferior border of the level IV and V regions is the superior margin of the clavicle. Below the superior margin of the clavicle, nodes are defined as supraclavicular for concordance with the American Joint Committee on Cancer 1997 classification³ (Som et al,¹ Table 2). This definition leads to a counterintuitive, but appropriate, definition in which "supraclavicular nodes" are actually inferior to the clavicle. Because the position of the clavicle may range widely on axial imaging, depending on the elevation of the shoulder, it is our experience . . . [Full Text of this Article]