Indian Journal of Nuclear Medicine
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Year : 2021  |  Volume : 36  |  Issue : 2  |  Page : 223-225

Parathyroid carcinoma – A malignant cause of metabolic skeletal super scan on fluorodeoxyglucose positron emission tomography-Computed tomography

Division of PET/CT, Gemini Scans, Chennai, Tamil Nadu, India

Correspondence Address:
Dr. Santhosh Sampath
Division of PET/CT, Gemini Scans, Vadapalani, Chennai - 600 026, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijnm.ijnm_213_20

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Excessive abnormal tracer uptake in active tracer avid organ(s) with the suppression of physiological background tracer distribution is termed as super scan. Herein, we present an 18F-fluorodeoxyglucose positron emission tomography-computed tomography (FDG-PET/CT), where the metabolic pattern of skeletal super scan with coexistent parathyroid tumor was seen giving rise to the suspicion of primary hyperparathyroidism. It was subsequently diagnosed as a case of parathyroid carcinoma. Very high levels of serum parathormone in parathyroid carcinoma lead to accelerated bone turn over resulting in metabolic skeletal superscan in FDG-PET/CT which is seldom observed in parathyroid adenoma.

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