Insulinoma history and symptoms

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Amandeep Singh M.D.[2]

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Overview

A positive long history of frequent episodes of altered mental status/confusion, visual disturbances and sweating is suggestive of insulinoma. The most common symptoms of insulinoma include altered mental status/confusion, visual disturbances like blurred vision/diplopia, sweating, hyperphagia and coma. Less common symptoms of insulinoma include palpitations, seizures, tremors, behavioral disturbances and weakness.

History and Symptoms

Insulinoma patients usually present with history of hypoglycemic episodes occurring over time with a recent increase in frequency and without any other cause known to cause hypoglycemia like exogenous insulin and hypoglycemic agents. The following are the history and symptoms of insulinoma:

History

Patients with insulinoma may have a positive history of:

Common Symptoms

Common symptoms of insulinoma include: [1][2]

Less Common Symptoms

Less common symptoms of insulinoma include

Neuroglycopenic symptoms
Visual disturbances 59%
Altered mental status/Confusion 75-80%
Behavioral problems 36%
Weakness 24-32%
Coma 47%
Seizures 36%
Sympathetic or Adrenergic symptoms
Sweating 12-69%
Palpitations 10-12%
Tremors 17-24%
Hyperphagia/Obesity 25-50%

References

  1. Metz DC, Jensen RT (2008). "Gastrointestinal neuroendocrine tumors: pancreatic endocrine tumors". Gastroenterology. 135 (5): 1469–92. doi:10.1053/j.gastro.2008.05.047. PMC 2612755. PMID 18703061.
  2. Boukhman MP, Karam JH, Shaver J, Siperstein AE, Duh QY, Clark OH (1998). "Insulinoma--experience from 1950 to 1995". West J Med. 169 (2): 98–104. PMC 1305178. PMID 9735690.



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