Figure 4



Figure 4 : 

Results of echocardiographic studies and 18F-fluorodeoxyglucose positron emission tomography computed tomography (18F-FDG PET/CT) in a case of suspicion of aortic bioprosthetic valve infective endocarditis. The first transoesophageal echocardiography (TEE) (A) showed a small doubtful thickening around the aortic bioprosthetic annulus (yellow arrow) in a patient with fever and negative blood cultures. The second TEE (B), performed 8days later, showed the development of a periprosthetic abscess (yellow arrow). 18F-FDG PET/CT performed the day after the first TEE showed hyperfixation around the aortic prosthesis (C). The patient underwent urgent valve surgery, which confirmed the abscess. Of note, colonic hyperfixation was shown by 18F-FDG PET/CT (green arrow), which allowed a polyp to be revealed at the colonoscopy performed thereafter.