Gastrinoma

QUESTION: What are the important points of diagnosis for Gastrinomas?
ANSWER: Secretin stimulation test paradoxically increases gastrin levels (> 120) and octreotide scan is very helpful for localization due the high concentration of somatostatin receptors
QUESTION: What is Passaro's Triangle or Gastrinoma Triangle
ANSWER: the junction of the cystic and common bile duct superiorly, the junction of the second and third portion of the duodenum laterally, the junction of the neck and body of the pancreas medially