Can insulinoma be cured simply by undergoing surgery?

Pancreatic islet cell tumors are classified into two categories: functional and nonfunctional. Functional islet cell tumors—most commonly insulinomas—arise from pancreatic β-cells and may occur anywhere within the pancreas. These tumors are typically smaller than 20 mm and clinically present as episodic hypoglycemic coma. Nonfunctional islet cell tumors are rare.

Insulinomas can be cured surgically.

In early-stage insulinoma, a combination of pharmacotherapy and dietary management may effectively alleviate symptoms in some patients. To mitigate symptoms, patients should consume frequent, carbohydrate-rich meals and snacks. Oral or intravenous glucose administration prior to anticipated hypoglycemic episodes is recommended. At night, slow-absorbing carbohydrate sources—such as bread, potatoes, and rice—should not be restricted. During acute hypoglycemic episodes, rapidly absorbed carbohydrates—such as fruit juice or sucrose—should be administered promptly.

Surgical resection remains the most effective treatment for insulinoma; once definitively diagnosed, surgery should be performed as early as possible. Surgical options include simple tumor enucleation for superficial, small, solitary, benign insulinomas. For larger, deeper, multifocal, or histologically indeterminate (benign vs. malignant) tumors located in the body or tail of the pancreas, distal pancreatectomy (resection of the pancreatic body and tail) is indicated.

Within the first five postoperative days, patients must monitor blood glucose and urinary glucose levels daily. Some patients may develop transient postoperative hyperglycemia with glucosuria, which can be managed by adjusting the infusion rate and volume of intravenous glucose solutions; a minority may require insulin therapy for glycemic control.