F-18 FDG PET demonstration of a thyroid metastasis in a patient with colon cancer

Toshihiro Iguchi, Junji Matsuoka, Shuhei Sato, Yoshihiro Okumura, Masako Omori, Hirofumi Mifune, Shiro Akaki, Susumu Kanazawa

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A 51-year-old man with a history of surgical removal of sigmoid colon cancer underwent F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) to search for distant metastases and/or local recurrence because the carcinoembryonic antigen level was elevated. F-18 FDG PET images showed increased focal FDG uptake in the left lobe of the thyroid. Computed tomography images showed thyroid tumor in the left lobe as well as F-18 FDG PET images. Thereafter he underwent thyroidectomy and the resected specimen was histopathlogically shown to have thyroid metastasis from colon cancer. F-18 FDG PET was useful to detect thyroid metastasis from colon cancer as well as the most frequently seen metastatic sites such as liver, lungs, and lymph nodes.

Original languageEnglish
Pages (from-to)361-362
Number of pages2
JournalClinical Nuclear Medicine
Issue number5
Publication statusPublished - May 2007


  • Colon cancer
  • Thyroid metastasis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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