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BOOKLET to Provide Basic Information Regarding Health Effects of Radiation (3rd edition)

Thyroid Ultrasound Examination: Handling of Cysts with Solid Components

Thyroid Ultrasound Examination: Handling of Cysts with Solid Components_Figure

Some cysts contain nodules. In the Thyroid Ultrasound Examination conducted in the Fukushima Health Management Survey, those cysts with solid components (nodules) are all judged as nodules and diagnosis criteria for nodules are applied.

For example, a 30 mm-cystic lesion with a 3 mm-solid component is judged as a nodule and diagnosis criteria for nodules are applied. As the size is larger than 5.1 mm, the examinee is diagnosed as Grade B and is advised to receive the Confirmatory Examination.

Lesions judged as fluid-only cysts are considered to be benign.

(Related to p.130 of Vol. 2, "Thyroid Ultrasound Examination: Cysts")

  • Included in this reference material on March 31, 2016
  • Updated on March 31, 2022
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