Abstract：
UNASSIGNED: Primary skeletal muscle lymphoma is rare. We describe 18 F-FAPI-42 and 18 F-FDG PET/MRI findings in a case of primary peripheral T-cell lymphoma of the skeletal muscles with brain involvement. The multiple skeletal muscle tumors and one larger cerebral tumor showed intense FDG uptake and mild to moderate FAPI uptake. FDG PET was superior to FAPI PET in delineating the muscle tumors because of significantly higher FDG uptake of the muscle tumors than FAPI uptake. FAPI PET was superior to FDG PET in delineating the cerebral lesion because of a very low background FAPI activity in the brain parenchyma.
摘要：
■原发性骨骼肌淋巴瘤是罕见的。我们描述了在伴有脑受累的骨骼肌原发性外周T细胞淋巴瘤的情况下，18F-FAPI-42和18F-FDGPET/MRI发现。多发性骨骼肌肿瘤和一个较大的脑肿瘤显示出强烈的FDG摄取和轻度至中度的FAPI摄取。FDGPET在描绘肌肉肿瘤方面优于FAPIPET，因为肌肉肿瘤的FDG摄取明显高于FAPI摄取。FAPIPET在描绘脑病变方面优于FDGPET，因为脑实质中的背景FAPI活性非常低。
