Evaluation of Splenic Metabolic Activity With 18FDG-PET in Hypertension

Inclusion Criteria: * absence of prior cancer diagnosis or remission from cancer at the time of FDG-PET/CT imaging (from at least 6 months) * age ≥ 30 and ≤ 85 years * absence of acute cardio/cerebrovascular disease (myocardial infarction, stroke, transient ischemic attack, revascularization) * absence of acute or chronic inflammatory or autoimmune disease * diagnosis of presence/absence of hypertension, on the basis of documented medical history Exclusion Criteria: * diabetes * atrial fibrillation * use of anti-inflammatory drugs in the week preceding the FDG-PET/CT imaging * chronic use of anti-inflammatory drugs