Medical MCQ - A 40-year-old woman develops light-headed episodes associated with sweating, palpitations, and hunger whenever she misses a meal. Her physical examination is normal, and she is not taking any medications. On one such episode, while in hospital, her blood glucose level was 30 mg/dL and the symptoms resolved with giving her juice. Which of the following is the most likely diagnosis?

A 40-year-old woman develops light-headed episodes associated with sweating, palpitations, and hunger whenever she misses a meal. Her physical examination is normal, and she is not taking any medications. On one such episode, while in hospital, her blood glucose level was 30 mg/dL and the symptoms resolved with giving her juice. Which of the following is the most likely diagnosis?

excess growth hormone

Cushing's disease

thyrotoxicosis

tumor of the pancreatic beta-cells

Question Category:

Medicine

Correct Answer:

tumor of the pancreatic beta-cells

Description:

Classification of hypoglycemia includes spontaneous causes such as reactive or fasting hypoglycemia and pharmacologic or toxic causes. The diagnosis of insulinoma is most certain when Whipple's triad is fulfilled: symptoms consistent with hypoglycemia, low plasma glucose, and relief of symptoms with elevation of plasma glucose to normal.

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