Management of sporadic gastrinomas

Area of Science:

• Gastroenterology
• Endocrinology
• Surgical Oncology

Background:

• Zollinger-Ellison Syndrome (ZES) is a rare condition caused by gastrin-producing tumors leading to severe gastric hypersecretion and ulcer disease.
• Traditional management often required total gastrectomy due to uncontrolled hypersecretion.
• Advances in medical and diagnostic tools have significantly changed ZES patient management.

Purpose of the Study:

• To present experiences with medical and surgical treatment modalities for sporadic Zollinger-Ellison Syndrome.
• To evaluate the effectiveness of current therapies in controlling gastric hypersecretion and managing gastrinomas.
• To highlight the shift from surgical to medical management as the primary approach.

Main Methods:

• Retrospective review of 13 patients with sporadic ZES over 1-16 years.
• Assessment of medical management using H2-blockers and Omeprazol for gastric hypersecretion.
• Utilized angiography and CT scanning for tumor detection; ultrasound was less effective.
• Surgical resection for tumor removal in 8 patients.

Main Results:

• Gastric hypersecretion was effectively controlled by H2-blockers or Omeprazol.
• Insufficient drug dosage or drug effect escape were identified as reasons for complications.
• Tumor lesions detected by angiography (8/9) and CT (6/9); US was not useful for solitary adenomas.
• Four patients with non-metastatic primary adenomas achieved a definitive cure after surgery.

Conclusions:

• Medical management with antisecretory drugs is now the primary strategy for controlling gastric hypersecretion in ZES.
• Surgical resection of non-metastatic gastrinomas can provide a cure.
• Improved imaging techniques enhance the success of locating gastrinomas, aiding in treatment planning.