From the Departments of PET/CT and.
Nuclear Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
Clin Nucl Med. 2019 Apr;44(4):310-312. doi: 10.1097/RLU.0000000000002451.
Diffuse-type tenosynovial giant cell tumor is a locally aggressive neoplasm that typically involves the knee and hip but rarely involves the shoulder. In this case, a 74-year-old woman presented a painless mass in the right shoulder. FDG PET/CT demonstrated intense FDG uptake with an SUVmax of 19.2 in the lesion. The mass was dissected and confirmed as diffuse-type tenosynovial giant cell tumor by pathology. Follow-up FDG PET/CT assessment revealed more extensive soft tissue infiltration and adjacent bone erosion 3 years after surgery. Thus, FDG PET/CT well demonstrated the hypermetabolic and local aggressive characteristics of the lesion.
弥漫型腱鞘巨细胞瘤是一种局部侵袭性肿瘤，通常累及膝关节和髋关节，但很少累及肩关节。本例为 74 岁女性，右侧肩部出现无痛性肿块。FDG PET/CT 显示病变部位摄取 FDG 明显增加，SUVmax 为 19.2。肿块被切除，病理证实为弥漫型腱鞘巨细胞瘤。术后 3 年的 FDG PET/CT 随访评估显示，软组织浸润更广泛，邻近骨侵蚀。因此，FDG PET/CT 很好地显示了病变的高代谢和局部侵袭性特征。
