Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University Medical Center Tübingen, Germany.
Clin Imaging. 2011 Sep-Oct;35(5):405-7. doi: 10.1016/j.clinimag.2010.09.005.
For cancers of the head and neck, the combination of (18)F-fluorodeoxy-glucose positron emission tomography (FDG-PET)/computed tomography (CT) gains wide acceptance, especially if the primary tumor is unknown (CUP). A patient underwent FDG-PET/CT for squamous cell CUP with cervical lymph node metastases. FDG-PET/CT showed uptake in the right side of the tongue, rendering this area a possible location for the primary tumor. However, clinical examination revealed a deviation of the tongue toward the left side indicating affection of the left hypoglossal nerve, causing the increased FDG uptake. This case illustrates the interpretive pitfalls of unspecific FDG uptake in PET/CT imaging of the head and neck.
对于头颈部癌症，（18）F-氟代脱氧葡萄糖正电子发射断层扫描（FDG-PET）/计算机断层扫描（CT）的组合得到了广泛的认可，特别是如果原发肿瘤未知（CUP）的情况下。一名患者因鳞状细胞 CUP 伴颈部淋巴结转移而行 FDG-PET/CT 检查。FDG-PET/CT 显示右侧舌部摄取增加，提示该区域可能为原发性肿瘤的部位。然而，临床检查发现舌偏向左侧，提示左侧舌下神经受累，导致 FDG 摄取增加。本例说明了头颈部 PET/CT 成像中无特异性 FDG 摄取的解释陷阱。
