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Spot radiographs of the left supraclavicular region showing ( a ) a micropuncture needle (arrow) accessing the cervical portion of the thoracic duct which is opacified by ethiodized oil from preceding intranodal lymphangiography, and ( b ) a 3-Fr catheter from a micropuncture kit (black arrow) in the cervical portion of the thoracic duct used to inject water-soluble contrast which reveals the lymphovenous junction (white arrow).
