diagnosis of gastrinoma – Surgery Superspeciality MCQs

Q) Gastrinoma false is (AIIMS GI 2020)
a) Fasting sG 1000 g/ml
b) Duodenotomy should be done in all cases
c) Diarrhea most common symptom
d) SRS can localize 80% cases

Ans ) c -

Duodenotomy detects 25% to 30% of tumors not seen on preoperative imaging.

Gastrin levels higher than 1000 pg/mL are strongly suggestive of gastrinoma, provided that the patient demonstrated increased gastric acid secretion ( gastric secretion ph should be less than 2)

Most common is abdominal pain ( 75%) In 10% to 20% of patients, diarrhea is the only symptom ( Saby page 954)

SRS should be performed because almost all gastrinomas express somatostatin receptors.