Which is the best investigation for metastatic gastrinoma?
In case of gastrinoma showing metastasis the diagnostic sensitivity of octreoscan is 80-100%. In contrast in primary gastrinoma, Endoscopic ultrasound shows a sensitivity of 80-100% versus octreoscan which shows a sensitivity of 67-86%.
Selective aerial secretin injection
Octreoscan
BAO/MAO ratio
Ultrasound
Zollinger Ellision Syndrome