Análisis de 1.000 casos de estudios metabólicos en Chile con PET 18Flúor-deoxiglucosa (FDG) / Chilean experience with the use of 18F-deoxyglucose positron emission tomography

ABSTRACT

Background: Clinical oncology is the main application of 18F-deoxyglucose (FDG) positron emission tomography (PET). Aim: To evaluate the first 1,000 patients studied with FDG PET in Chile. Material and methods: Retrospective analysis of 1,000 patients (aged between 1 and 94 years, 550 females) studied with FDG PET, since 2003. All studies were performed in a high resolution Siemens Ecat-Exact HR (+). All reports were based on the visual analysis of three plane and three-dimensional images. Results: Ninety seven percent of exams were done for oncological indications, mainly lung lesions, lymphoma, colorectal and gastroesophageal, cancer and breast tumors. Only 1 percent of patients had brain tumors. Non tumor neurological indications corresponded to 1.7 percent. Cardiac studies were only 0.3 percent and inflammatory process corresponded to 1 percent. The 5.6 percent corresponded to pediatric population. Six percent of patients were aged less than 18 years and in 50 percent of them, the indication was oncological, mainly lymphomas, brain tumors, endocrine cancers and sarcomas. The remaining 50 percent had a neurological indications, mainly for refractory epilepsy. Conclusions: PET FDG imaging was effective in the management of diverse diseases of children and adults.