Which one of the following is best for localization of zollinger ellison syndrome?
Endoscopic ultrasound permits imaging of ZES with high degree of resolution (<5mm). This modality rules out small neoplasms in pancreas. Imaging modalities : EUS>octreoscan>MRI>USG The secretin provocative test is usually positive, with the criterion of a >120-pg/mL increase over the basal level having the highest sensitivity (94%) and specificity (100%).
EUS (endoscopic ultrasound)
Secretin injection test
MRI
Basal gastric acid output
Zollinger Ellision Syndrome