F-18 FDG PET demonstration of a thyroid metastasis in a patient with colon cancer.
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.
Iguchi
Toshihiro
T
Department of Radiology, Okayama University Medical School, and Department of Radiology, PET-RI Center, Okayama Kyokuto Hospital, 567-1 Kurata, Okayama 703-8625, Japan. iguchi@cc.okayama-u.ac.jp
Matsuoka
Junji
J
Sato
Shuhei
S
Okumura
Yoshihiro
Y
Omori
Masako
M
Mifune
Hirofumi
H
Akaki
Shiro
S
Kanazawa
Susumu
S
D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000473:pathology; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D014057:Tomography, X-Ray Computed / Q000379:methods
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18