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

https://www.ncbi.nlm.nih.gov/pubmed/28491200

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.