Gastrinoma

Gastrinoma
File:Gastric neuroendocrine tumour - intermed mag.jpg
Synonyms
Pronounce
Field	General surgery
Symptoms
Complications
Onset
Duration
Types
Causes
Risks
Diagnosis
Differential diagnosis
Prevention
Treatment
Medication
Prognosis
Frequency
Deaths

A gastrinoma is a tumor in the pancreas or duodenum that secretes excess of gastrin leading to ulceration in the duodenum, stomach and the small intestine. There is hypersecretion of HCl acid into the duodenum, which causes the ulcers. Excessive HCl acid production also causes hyperperistalsis, and inhibits the activity of lipase, causing severe diarrhea.

It is frequently the source of the gastrin in Zollinger-Ellison syndrome.<ref name="urlDorlands Medical Dictionary:gastrinoma">

Dorlands Medical Dictionary:gastrinoma(link). {{{website}}}.

</ref>

It is usually found in the duodenum, although it may arise in the stomach or pancreas. Those occurring in the pancreas have a greater potential for malignancy. Most gastrinomas are found in the gastrinoma triangle; this is bound by the junction of cystic and common bile ducts, junction of the second and third parts of the duodenum, and the junction of the neck and body of the pancreas.

Signs and symptoms

Gastrinoma causes the following symptoms:Template:Mcn

• Hypergastrinemia
• Ulcers of the duodenum, stomach, and small intestine.
• Severe diarrhea.
• Generalized cancer symptoms.

Diagnosis

• Fasting serum gastrin
• In case of moderate hypergastrinemia, a secretin stimulation test can help in the diagnosis
• Localization by somatostatin scintigraphy

Treatment

Treatment can involve surgery or proton pump inhibitors. ^{(September 2016)}

See also

• Multiple endocrine neoplasia type 1

External links

• Emedicine

   This article is a  stub. You can help WikiMD by expanding it!