Thyroid adenoma other imaging findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ammu Susheela, M.D. [2]

Overview

Other diagnostic studies for thyroid adenoma include thyroid scan, which demonstrates hot, cold, or functioning nodule.

Other Imaging Findings

Thyroid Scan (radioiodine scintigraphy)

Key Findings in Radioiodine Scintigraphy in Thyroid Adenoma

  • Cold – 85% of thyroid nodules are cold and 8% of cold and warm thyroid nodules are malignant.[2]
  • Functioning nodules – The cells in the nodule take up the iodine much like a normal cell does. The likelihood of cancer is very low in these types of nodules and a biopsy is usually not necessary.
  • Hot – 5% of thyroid nodules are hot. Malignancy is virtually nonexistent in hot nodules.[3]
  • An 123I scan showing a hot nodule, accompanied by a lower than normal thyroid stimulating hormone, is strong evidence that the nodule is not cancerous.

Key Examples of Radioiodine Scintigraphy in Thyroid Adenoma

Comet tail artifacts from colloid. Thyroid scan image.http://www.wikipedia.org[4]

References

  1. MedlinePlus Encyclopedia Thyroid scan
  2. Gates, Jeremy D.; Benavides, Linda C.; Shriver, Craig D.; Peoples, George E.; Stojadinovic, Alexander (2009). "Preoperative Thyroid Ultrasound In All Patients Undergoing Parathyroidectomy?". Journal of Surgical Research. 155 (2): 254–60. doi:10.1016/j.jss.2008.09.012. PMID 19482296.
  3. Robbins pathology 8ed page 767
  4. "Wikipedia thyroid radioiodine scintigraphy".

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