Posts Tagged ‘goiters causes’

Goiters and nodules

Thursday, March 18th, 2010

1 – goiters:
Definition:
Diffuse increase in the volume of the thyroid gland that is not cancer or thyroiditis, which is not accompanied by disturbance of thyroid function.
Mechanisms:

  • Inability of the thyroid gland to provide the amount of hormone needed to require the agency at some point.
  • The decrease in hormone levels will lead to hyper-secretion of TSH, which will cause an enlargement of the gland.

Causes:

  • Iodine deficiency
  • Partial deficiency in thyroid hormones
  • Using drugs that block the conversion of iodine (eg lithium) or certain foods (cabbage, rape)

Epidemiology:

  • More common in women
  • Depending on their frequency in a given population, it is called endemic goiter and sporadic.
  • Endemic goiters occur in certain regions of the world generally have a deficiency in iodine (eg mountainous regions)

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