人工血管感染疑い症例における脾FDG集積の評価

The evaluation of splenic FDG uptake in suspected cases of vascular graft infection

血行再建術後のグラフト感染は憂慮すべき合併症であり，グラフト移植部位，病原菌の種類，感染の重症度や広がりの診断をもとにグラフトの除去，再建の手順などを決定する必要がある^1）。

FDG-PET/CT is useful in assessing inflammatory activity when graft infection is suspected. In this article, we analyzed the relationship between FDG graft uptake and FDG splenic uptake to find out useful extra vascular findings for diagnosing vascular graft infection in patients with eleven cases. Although no significant correlation between serum inflammatory markers and FDG uptake indexes in grafts and spleens, there were strong significant correlations between graft FDG uptake and spleen FDG uptake parameters. In comparison of the FDG parameters between the alive and the dead cases, all parameters tended to be higher in the dead group. The splenic FDG uptake parameter was considered to be useful supplemental indexes in estimating severity of vascular graft infection.