Uterine leiomyosarcoma metastatic to thyroid shown by 18F-FDG PET/CT imaging

Rev Esp Med Nucl Imagen Mol. 2017 Mar-Apr;36(2):113-115. doi: 10.1016/j.remn.2016.09.002. Epub 2016 Oct 21.
[Article in English, Spanish]

Abstract

About one third of focal thyroid uptakes in a fluorodeoxyglucose (FDG) positron emission tomography/computerized tomography (PET/CT) study are malignant, the most frequent histological type being papillary carcinoma. Metastases to the thyroid account for approximately 7.5% of thyroid malignancies and come mainly from kidney, lung, head and neck, and breast cancers. We report the case of a 64-year-old woman presenting a fast growing thyroid nodule whose primitive or metastatic origin was not obvious, for which 18F-FDG PET/CT helped in the diagnostic process and in the later management of the patient. Histopathologic findings finally revealed a metastasis of uterine leiomyosarcoma.

Keywords: Leiomiosarcoma; Leiomyosarcoma; PET/CT; PET/TC; Sarcoma; Thyroid; Tiroides; Uterus; Útero.

Publication types

  • Case Reports

MeSH terms

  • Bone Neoplasms / diagnostic imaging
  • Bone Neoplasms / secondary
  • Combined Modality Therapy
  • Fatal Outcome
  • Female
  • Fluorine Radioisotopes / analysis*
  • Fluorodeoxyglucose F18 / analysis*
  • Humans
  • Ilium / diagnostic imaging
  • Leiomyosarcoma / diagnostic imaging*
  • Leiomyosarcoma / secondary*
  • Leiomyosarcoma / therapy
  • Lung Neoplasms / diagnostic imaging
  • Lung Neoplasms / secondary
  • Middle Aged
  • Positron Emission Tomography Computed Tomography*
  • Radiopharmaceuticals / analysis*
  • Thyroid Neoplasms / diagnostic imaging*
  • Thyroid Neoplasms / secondary*
  • Uterine Neoplasms / pathology*
  • Uterine Neoplasms / therapy

Substances

  • Fluorine Radioisotopes
  • Radiopharmaceuticals
  • Fluorodeoxyglucose F18
  • Fluorine-18