Aneurysmal angiosarcoma associated with vascular graft revealed by (18)F-FDG-PET imaging.
Fiche publication
Date publication
juin 2017
Journal
Radiology case reports
Auteurs
Membres identifiés du Cancéropôle Est :
Pr MARIE Pierre-Yves
Tous les auteurs :
Chetouani A, Perrin M, Drouet C, Marie PY, Verger A
Lien Pubmed
Résumé
We report a rare case of vascular graft-associated aneurysmal angiosarcoma by (18)F-Fluorodeoxyglucose (FDG) positron emission tomography (PET). An 81-year-old male patient, with a prior history of graft interposition 1 year previously, was referred to (18)F-FDG-PET because of an inflammatory syndrome of unknown origin. FDG-PET images revealed a particular pattern of intense circular uptake within the arterial wall (SUVmax = 10) in a popliteal aneurysm and, additionally, a large hypermetabolic mass centered by the graft. Remote hypermetabolisms in lung nodules and pleural thickenings were also detected. The diagnosis of angiosarcoma was ascertained through histopathological analysis of surgical samples. Development of an aneurysmal angiosarcoma at the site of a vascular graft is a rare entity, often misdiagnosed. (18)F-FDG-PET appears to be useful in its detection with a PET pattern of intense circular uptake within the arterial wall. Such finding should lead to the search for distant metastasis.
Mots clés
18F-FDG-PET, Aneurysm, Angiosarcoma, Vascular graft
Référence
Radiol Case Rep. 2017 Jun;12(2):413-415