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Thyroid tumours (benign)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The majority of benign tumours of the thyroid gland arise from the follicular epithelium and so, are follicular adenomas.

They usually present as solitary nodules less than 4 cm in diameter and clearly demarcated from the surrounding thyroid substance. Rarely, two or more adenomas are present.

Clinically, adenomas may:

  • cause pressure symptoms in the neck
  • suddenly enlarge and become painful due to intralesional haemorrhages
  • cause hyperthyroidism - but unassociated with the ophthalmopathy seen in Grave's disease
  • take up radioactive iodine - appear as "hot" nodules

A follicular adenoma may be difficult to distinguish from the dominant nodule of a multinodular goitre. Occasionally, it has some dependence on TSH and can be made to regress by administering thyroid hormones.

Other benign tumours of the thyroid are rare e.g. lipomas, haemangiomas and dermoid cysts.

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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