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Axial CT imaging of metastatic neck lymph nodes associated with canine oral tumors. (A) (Top) Melanoma metastasis was detected in the enlarged, contrast enhancing, left mandibular lymph node (solid arrow) on CT imaging. (B) (Bottom) Metastatic melanoma cells from an oral mass were found in the enlarged, heterogeneously contrast enhancing, right retropharyngeal lymph node (solid arrow) on CT imaging.
