What is the role of portal venous sampling in the evaluation of insulinoma?

Updated: May 31, 2020
  • Author: Zonera Ashraf Ali, MBBS; Chief Editor: Neetu Radhakrishnan, MD  more...
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Preoperative portal venous sampling is obsolete as a routine investigation because of a high complication rate (10%), but it may be used when all other imaging procedures fail and surgical exploration findings are negative.

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