Cervical lymph node metastasis of thyroid papillary carcinoma imaged with fluorine-18-FDG, technetium-99m-pertechnetate and iodine-131-sodium iodide.

  • 1 October 1995
    • journal article
    • case report
    • Vol. 36  (10) , 1843-5
Abstract
A 49-yr-old white woman with diffuse sclerosing variant of papillary carcinoma of the thyroid revealed abnormal [18F]FDG accumulation within cervical lymph node metastases prior to thyroidectomy. The abnormal cervical foci of glucose metabolism corresponded to similar areas of abnormal [99mTc]pertechnetate and radioiodine accumulation on presurgical scans. The primary thyroid tumor within the thyroid gland was not delineated as a focal defect on any of the three imaging studies. The relative thyroid-to-background soft-tissue ratio in the [18F]FDG study, however, appeared higher than usual. As with 131I and [99mTc]pertechnetate, this case demonstrates that [18F]FDG PET can detect cervical lymph node metastases in the preoperative thyroid cancer patient.

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