18F-FDG PET/CT Metabolic Activity Assessment in Infective and Neoplastic Diseases

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Abstract
We report a case of a 73-year-old-man with systemic hydatidosis and concomitant Burkitt lymphoma. He came at our attention for fever and weight loss suspected for parasitic cyst discharge and also for lymphoproliferative disorder. We performed US, which showed disseminated parasitic cysts. CECT showed parasitic cysts and also several abdominal and thoracic lymphnodes and adrenal hypodense tissue. 18F-FDG PET/CT was performed and showed lack of 18F-FDG uptake in cysts and high 18F-FDG uptake in lymphnodes and adrenal glands. These findings permitted us to exclude the cyst discharge, to localize a site for biopsy, and to define and stage the Burkitt lymphoma