EUS has enjoyed much success in the diagnosis of GI tract pathology since its inception in 1980. Since then, accepted indications and uses have continually expanded, including inventions such as FNA for the tissue diagnosis and staging of several upper GI malignancies.1 Because of the unique physics of US imaging (especially at short distances in which resolution is exquisite), EUS often can offer a definitive view of a lesion when other imaging modalities are unable to reveal, or sufficiently characterize, a lesion. This case describes the superiority of EUS for diagnosis of an abdominal mass thought to be a malignancy on CT and magnetic resonance imaging (MRI) radiography.
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