Key result
18F-fluorocholine PET/CT for prostate cancer staging incidentally detected an oxyphilic papillary thyroid carcinoma and a medullary microcarcinoma in a 70-year-old man.
Case Report (n=1)
18F-fluorocholine PET/CT can incidentally detect oxyphilic papillary thyroid carcinoma, which represents a significant proportion of incidental focal thyroid fluorocholine uptake.
Focal thyroid uptake on 18F-fluorocholine PET/CT warrants evaluation to exclude malignancy; leaves open its true incidence and management implications.
A 70-year-old man with prostate cancer and increased prostate-specific antigen level of 55 ng/mL underwent staging F-fluorocholine PET/CT, which demonstrated the primary prostate tumor and a focal area corresponding to a 2-cm hypodense nodule in the left thyroid lobe. Fine-needle aspiration and subsequent total thyroidectomy with central lymph node dissection showed an oxyphilic papillary thyroid carcinoma and a medullary microcarcinoma. Oxyphilic tumors represent a significant proportion of the few case reports of incidental focal thyroid fluorocholine thyroid uptake.
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Lalire et al. (2016) conducted a case report in Prostate cancer (n=1). 18F-Fluorocholine PET/CT was evaluated on Incidental detection of thyroid carcinoma. 18F-fluorocholine PET/CT for prostate cancer staging incidentally detected an oxyphilic papillary thyroid carcinoma and a medullary microcarcinoma in a 70-year-old man.
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