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Updated: Apr 25, 2026
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Published on: February 3, 2023
Metastatic undifferentiated spindle cell sarcoma of the thyroid gland evaluated by 18F-FDG PET/CT
Giorgio Treglia1, Massimo Bongiovanni, Gaetano Paone
1From the *Department of Nuclear Medicine and PET/CT Center, Oncology Institute of Southern Switzerland, Bellinzona; and †Institute of Pathology, Locarno, Switzerland.
Abstract:
We describe a rare case of metastatic undifferentiated spindle cell sarcoma (USCS) of the thyroid gland evaluated by 18F-FDG PET/CT. A 63-year-old male patient with histological diagnosis of USCS of the thyroid gland underwent 18F-FDG PET/CT for staging. PET/CT revealed increased radiopharmaceutical uptake corresponding to a thyroid mass and mild 18F-FDG uptake in a 7-mm lung nodule, which was diagnosed as USCS metastasis. Based on these findings, the patient was referred to surgery and chemotherapy, but he died 6 months later for disease progression.
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