Colloid nodule (thyroid)

Colloid nodules are non-neoplastic benign nodules occurring within the thyroid gland. They form the vast majority of nodular thyroid disease.


Colloid nodules are composed of irregularly enlarged follicles containing abundant colloid. Some colloid nodules can be cystic (cystic colloid nodule) and may contain areas of necrosis, haemorrhage and/or calcification. A colloid nodule may be single or multiple and can vary considerably in size.

Radiographic features

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Article information

rID: 29723
System: Head & Neck
Synonyms or Alternate Spellings:
  • Colloid nodules (thyroid)
  • Colloid thyroid nodules
  • Adenomatous thyroid nodule
  • Colloid nodule
  • Colloid nodules

Cases and figures

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