Distribution of F-18 fluorodeoxyglucose (F-18 FDG) in abdominal aortic aneurysm: high accumulation in macrophages seen on PET imaging and immunohistology.
A 68-year-old man was hospitalized for unstable angina and underwent emergency coronary artery bypass surgery. During the operation, a pulsatile large abdominal aortic aneurysm (AAA) was discovered. To define the optimal treatment of the abdominal aneurysm, after bypass surgery, CT scans and positron emission tomography (PET) were performed, as we routinely do. PET imaging combined with immunohistologic examination showed a region of increased F-18 FDG uptake corresponding to an inflammatory infiltrate in the aortic wall in contrast to the thrombus in the aneurysm (devoid of inflammatory cells). The luminal area showed midlevel F-18 FDG uptake corresponding to circulating mediators.
Defawe
Olivier Damien
OD
Department of Cardiovascular Surgery, University of Liège, Liège, Belgium. olivier.defawe@ulg.ac.be
Hustinx
Roland
R
Defraigne
Jean Olivier
JO
Limet
Raymond
R
Sakalihasan
Natzi
N
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging* / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D001026:Coronary Artery Bypass / Q000009:adverse effects; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D006801:Humans; D008264:Macrophages / Q000000981:diagnostic imaging* / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D008297:Male; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D014018:Tissue Distribution; D014657:Vasculitis / Q000000981:diagnostic imaging / Q000209:etiology / Q000276:immunology / Q000473:pathology
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18