(11)C-Choline positive but (18)F-FDG negative pancreatic metastasis from renal cell carcinoma on PET.

We report a 61-year-old woman with a metastatic pancreatic tumor from renal cell carcinoma, measuring 35×40 mm. PET scans demonstrated accumulation of (11)C-choline in the metastatic pancreatic tumor, but no accumulation of (18)F-FDG. Choline PET/CT may play a useful and complementary imaging modality, especially when FDG-PET/CT does not show expected findings or when the evaluation of tumor viability is needed, in patients with renal cell carcinoma. PMID: 28626263 [PubMed - in process] (Source: Nagoya Journal of Medical Science)

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