Mahfouz Ayman, Naji Meeran, Mok Wing Yan, Taghi Ali S, Win Zarni
Department of Radiology, University Hospitals of Leicester, Leicester Royal Infirmary, Leicester, UK.
Ear Nose Throat J. 2015 Sep;94(9):400-2.
A false-positive uptake of F18-fluorodeoxyglucose (FDG) on positron-emission tomography/computed tomography (PET/CT) can result in confusion and misinterpretation of scans. Such uptakes have been previously described after injection of polytetrafluoroethylene (Teflon) into the vocal folds. Similarly, vocal fold injection of silicone elastomer (Silastic) can result not only in a false-positive FDG uptake on PET/CT, but also in chronic inflammation. We report a case of increased FDG uptake in a vocal fold after Silastic injection that was misinterpreted as a malignancy in a 70-year-old woman who had metastatic carcinoma of the stomach.
正电子发射断层扫描/计算机断层扫描（PET/CT）上F18-氟脱氧葡萄糖（FDG）的假阳性摄取可导致扫描结果的混淆和误判。此前曾有报道，向声带注射聚四氟乙烯（特氟龙）后会出现这种摄取情况。同样，向声带注射硅橡胶（硅橡胶）不仅会导致PET/CT上出现FDG假阳性摄取，还会导致慢性炎症。我们报告了一例在声带注射硅橡胶后FDG摄取增加的病例，该病例发生在一名患有胃转移性癌的70岁女性身上，最初被误诊为恶性肿瘤。
