From the Department of Nuclear Medicine, Saint-Etienne University Hospital, University of Saint-Etienne.
Clin Nucl Med. 2022 Nov 1;47(11):e689-e691. doi: 10.1097/RLU.0000000000004327. Epub 2022 Jul 26.
Increased muscle uptake is commonly seen with 18 F-FDG PET/CT because of an important physiological muscle glucose metabolism. Muscle uptake can express a recent significant muscle activity. However, the absence of muscle uptake is almost never described or interpreted. We describe the case of an 8-year-old boy with extrarenal rhabdoid tumor in the right carotid space. An MRI and an 18 F-FDG PET/CT were performed for the diagnostic workup. There was no uptake in the lateral rectus oculomotor muscle unlike all other oculomotor muscles. The ophthalmological examination found a diplopia confirmed by the Lancaster test.
由于肌肉葡萄糖代谢这一重要的生理特性，18 F-FDG PET/CT 常可见到肌肉摄取增加。肌肉摄取可以反映近期显著的肌肉活动。然而，几乎从未有过关于肌肉摄取缺失的描述或解释。我们描述了一例右侧颈动脉间隙肾外横纹肌样瘤的 8 岁男孩病例。为了进行诊断性检查，进行了 MRI 和 18 F-FDG PET/CT 检查。与所有其他眼外肌不同，外侧直肌动眼神经肌肉没有摄取。眼科检查发现了兰开斯特测试证实的复视。
