Neurofibromatosis and insulinoma

Area of Science:

• Endocrinology
• Oncology
• Genetics

Background:

• Neurofibromatosis is a genetic disorder characterized by uncontrolled tumor growth in the nervous system.
• Insulinomas are rare pancreatic tumors that secrete excessive insulin, leading to hypoglycemia.
• Recurrent seizures can be a severe manifestation of profound hypoglycemia.

Observation:

• A 45-year-old male patient with a diagnosis of neurofibromatosis presented with recurrent hypoglycemic episodes.
• These episodes were associated with symptoms of severe hypoglycemia, including recurrent seizures.
• Diagnostic workup revealed an insulinoma as the cause of the hypoglycemia.

Findings:

• Surgical resection of the insulinoma was performed.
• Following the successful removal of the insulinoma, the patient's hypoglycemic attacks and seizures were completely abolished.
• Histopathological examination suggested the tumor cells possessed amine-precursor-uptake and decarboxylation (APUD) properties.

Implications:

• This case underscores the potential association between neurofibromatosis and the development of insulinomas.
• It highlights the importance of considering endocrine tumors in patients with neurofibromatosis presenting with unexplained hypoglycemia.
• The findings contribute to the understanding of tumor spectrum in neurofibromatosis and the role of APUD cells in associated neoplasms.