From the Department of Nuclear Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Clin Nucl Med. 2020 Jul;45(7):549-551. doi: 10.1097/RLU.0000000000003073.
A 24-year-old woman with left hip pain for 4 months was admitted. Radiographs of the left hip showed a radiolucent lesion in the proximal femur. The lesion demonstrated hypointensity on T1-weighted and high intensity on T2-weighted fat saturated images. Tc-MDP bone scan and F-FDG PET/CT illustrated intense radiotracer accumulation at the osteolytic lesion. Postoperative pathology confirmed a low-grade myofibroblastic sarcoma (LGMS). LGMS is a rare neoplasm, which often occurred in the head and neck region. Our case suggested that LGMS should be considered in the differential diagnosis of proximal femur lesion on Tc-MDP bone scan and F-FDG PET/CT.
一位 24 岁女性，因左侧髋部疼痛 4 个月入院。左侧髋部 X 线片显示股骨近端透亮性病变。病变在 T1 加权像上呈低信号，在 T2 加权像脂肪饱和图像上呈高信号。Tc-MDP 骨扫描和 F-FDG PET/CT 显示溶骨性病变处放射性示踪剂摄取明显增加。术后病理证实为低度恶性肌纤维母细胞瘤（LGMS）。LGMS 是一种罕见的肿瘤，常发生于头颈部。本例提示在 Tc-MDP 骨扫描和 F-FDG PET/CT 中，对于股骨近端病变，应考虑 LGMS 的鉴别诊断。
