The normal cross-sectional anatomy of the axillary and supraclavicular regions is demonstrated. One hundred and sixty chest computed tomography scans were reviewed and criteria for differentiating normal axillary and supraclavicular structures from enlarged lymph nodes established. Axillary structures 14 mm or larger are suggestive of axillary adenopathy. Axillary structures 10-13 mm in size raise the possibility of adenopathy.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/4064544