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Insulinomatosis: new aspects.

Emanuel Christ1, Donato Iacovazzo2, Márta Korbonits2

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Summary
This summary is machine-generated.

Endogenous hyperinsulinemic hypoglycemia (EHH) is a rare disorder. A novel cause, insulinomatosis, involves multiple insulin-producing tumors and can be inherited via MAFA gene mutations.

Keywords:
MAFA geneendogenous hyperinsulinemic hypoglycemiainsulinomatosis

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Area of Science:

  • Endocrinology
  • Oncology
  • Genetics

Background:

  • Endogenous hyperinsulinemic hypoglycemia (EHH) is a rare condition.
  • Adult EHH is primarily caused by insulinomas, with other causes including MEN1 and NIPPS.
  • Insulinomatosis, characterized by multiple insulin-producing tumors, is a newly identified cause of EHH.

Approach:

  • This review synthesizes current knowledge on insulinomatosis.
  • It covers clinical, biochemical, imaging, and genetic aspects of the disease.
  • The review highlights the association of familial insulinomatosis with MAFA gene mutations.

Key Points:

  • Insulinomatosis presents as multiple pancreatic neuroendocrine tumors exclusively producing insulin.
  • While often sporadic, familial cases linked to MAFA gene mutations have been identified.
  • Paradoxically, familial insulinomatosis can co-occur with diabetes mellitus within affected families.

Conclusions:

  • Insulinomatosis represents a significant, albeit rare, cause of endogenous hyperinsulinemic hypoglycemia in adults.
  • Genetic analysis, particularly for MAFA mutations, is crucial for diagnosing familial forms.
  • Understanding insulinomatosis advances the diagnosis and management of complex hypoglycemia disorders.