A 46-year-old woman underwent surgery for parathyroid carcinoma 2 years ago. During follow-up, the patient presented with elevated parathyroid hormone (127.50 pg/mL; normal, 15-65). No abnormal uptake of 18 F-FDG or 11 C-choline was observed on 18 F-FDG and 11 C-choline PET/CT imaging. The patient was enrolled in a clinical trial for 18 F-FAPI PET/CT imaging, revealing a lesion with intense focal uptake within the left sternocleidomastoid muscle. The patient underwent surgery. Postoperative pathology and immunohistochemical analysis confirmed parathyroid carcinoma metastasis.
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Chen et al. (2024) studied this question.
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