Gastrinoma diagnosis

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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.

Gastrinoma

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Q) True about gastrinoma is 

a) At the time of diagnosis most are benign and only 20% are malignant

b) In Pancreas most tumors  are confined to the body and tail

c) All cases of gastrinoma should be screened for MEN 1

d) They are highly malignant and even after complete resection 5 year survival is 30%

Another Mcq on gastrinoma