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

• Published in: Revista espanola de medicina nuclear e imagen molecular Vol. 36; no. 2; p. 113
• Main Authors: Gauthé, M, Testart Dardel, N, Nascimento, C, Trassard, M, Banal, A, Alberini, J-L
• Format: Journal Article
• Language: English
• Published: Spain 01.03.2017
• Subjects: 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; Leiomiosarcoma; Sarcoma; Uterus; Leiomyosarcoma; PET/CT; PET/TC; Tiroides; Útero; Thyroid
• ISSN: 2253-8070

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 F-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.