Stomach CT Appearances

Gastrinoma CT Findings

• Found in the “Gastrinoma triangle” or “Passaro’s triangle” (the space between the junction of cystic duct/CBD, 2/3rd part of duodenum, and pancreatic head/neck junction)
• < 5cm
• Can be single or multiple
• May lead to Zollinger-Ellison Syndrome

Other Information About Gastrinoma

Etiology:

• Unknown

Epidemiology:

• Typically present in the 3rd-6th decades of life
• Slightly more common in males

Presentation:

• Typically asymptomatic
• Abdominal pain
• Diarrhea
• Indigestion
• Nausea and/or vomiting
• Hematochezia and/or hematemesis
• Weight loss

Prognosis:

• If the tumor is resected before metastasizing then the 5-year relative survival rate can surpass 90%
• After metastasis, the survival rate goes down to about 43%