双语病例丨原发性骨平滑肌肉瘤（XMRPET）
History: A 43-year-old woman prents with knee pain after feeling a popping nsation while playing tennis.
病史：43岁女性，打网球时感觉到砰的感觉，膝部疼痛。
Radiographs were obtained. 平片如下所示。
问答：
There is a lesion in the proximal tibia with a benign appearance.
∙True
∙Fal (correct!)
胫骨近端病灶呈良性表现。答：错误。直营店和加盟店的区别
The lesion in the proximal tibia has aggressive features, including an infiltrative appearance and ill-defined margins.
胫骨近端病灶有侵袭性，呈浸润性表现，边界模糊。
MR images
An MRI scan of the knee was performed. Intravenous contrast was not administered due to acute kidney injury. Coronal T1-weighted nonfat-saturated and T2-weighted fat-saturated images are shown below.
行膝关节MR扫描。由于急性肾损伤未行增强扫描。冠状T1WI非压脂及T2WI压脂图像如下所示。
问答
What is the next step? 下一步该做什么？
58xXx∙Short-term imaging follow-up 短期随访
∙No additional follow-up required 无需随访
∙Biopsy (correct!) 活检（正确答案）
黑猫用尾巴来撒娇
Additional questions
Biopsy of the tibial lesion revealed a pathologic diagnosis of leiomyosarcoma.
胫骨病变活检，病理诊断为：平滑肌肉瘤。
Primary bone leiomyosarcomas are common primary bone malignancies.
∙True
∙Fal (correct!)
原发性骨平滑肌肉瘤是常见的原发性骨恶性肿瘤。（说法错误）
Which of the following is more likely? 下列那种情况最可能？
∙Primary bone leiomyosarcoma 原发性骨平滑肌肉瘤
∙Leiomyosarcoma metastasis to bone (correct!) 平滑肌肉瘤转移至骨骼（正确）情人节贺卡怎么写
儿童牙齿发黑Pelvic MR images
An MRI scan of the pelvis was performed. Sagittal and axial T2-weighted images are shown.
盆腔MR图像：行盆腔MR扫描，矢状及轴位T2WI图像如下所示。
The uterine findings are highly suspicious for uterine leiomyosarcoma.
∙True
∙Fal (correct!)
子宫的表现应高度怀疑为子宫平滑肌肉瘤（说法错误）。
大棚种西瓜技术
心形怎么画There are typical findings of small benign leiomyomas. However, small leiomyosarcomas can have the same appearance as benign leiomyomas.
为小良性平滑肌瘤的典型表现，然而，小的平滑肌肉瘤可能与良性平滑肌瘤有着同样的表现。
>顾己及人
