Periampullary cancers are rare tumors arising within 2 cm of the major papilla of the duodenum. In this case report, we describe the use of liquid biopsy to analyze cell-free tumor DNA and exosomal microRNA to guide treatment selection in a patient with periampullary adenocarcinoma. To our knowledge, this is the first time such case report has been described in the literature.
Keywords: Cell free DNA, Liquid biopsy, MicroRNA
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