The Investigation of choice for diagnosing Zollinger Ellison syndrome includes
(D) Endoscopic ultrasound # Endoscopic ultrasound (EUS) permits imaging of the pancreas with a high degree of resolution (<5 mm).> EUS modality is particularly helpful in excluding small neoplasms within the pancreas & in assessing the presence of surrounding lymphnodes & vascular involvement.SENSITIVITY OF IMAGING STUDIES IN ZOLLINGER ELLISON SYNDROMEStudySensitivity, %Primary GastrinomaMetastatic GastrinomaUltrasound21-2814CT scan35-5935-72Selective angiography35-6833-86Portal venous sampling70-90N/ASASI55-7841MR!30-6071Octreoscan67-8680-100EUS80-100N/A
CT scan
Selective angiography
MRI
Endoscopic ultrasound
Miscellaneous