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Subacute Venous Infarct Mimicking Cerebral Metastasis in 18F-FDG PET/CT
Cihan Gündoğan1, Aytül Hande Yardimci2, Burçak Yilmaz Güneş1
1From the Departments of Nuclear Medicine and.
Abstract:
A 68-year-old woman with colon carcinoma was referred to F-FDG PET/CT imaging for staging. In addition to primary tumor involvement, PET/CT demonstrated focal FDG uptake in the right temporal lobe suggestive of primary brain tumor or metastasis. To delineate the lesion, a brain MRI scan showed sigmoid sinus thrombosis and vasogenic edema in the right temporal lobe. The patient presented a history of right-sided headache that began 1 week before the PET/CT. Neurological examination and MRI findings were concluded as subacute venous infarct due to sigmoid sinus thrombosis and that is a potential cause for false-positive FDG uptake on PET/CT.
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