磁共振成像能否提供特异性诊断？手部第一掌骨软组织透明细胞肉瘤病例报告。
Is Magnetic Resonance Imaging Able to Provide Specific Diagnoses? A Case Report of Clear Cell Sarcoma of Soft Tissue in the First Metacarpal of the Hand.
作者信息
Li Yunxin, Huang Ranran, Wang Aijie, Zhang Guowei, Su Yongbin
机构信息
Department of Radiology, Yantaishan Hospital, Yantai, China.
Department of Radiology, Beijing Jishuitan Hospital, Capital Medical University, Beijing, China.
出版信息
Case Rep Oncol. 2024 Sep 9;17(1):995-1000. doi: 10.1159/000540745. eCollection 2024 Jan-Dec.
INTRODUCTION
Clear cell sarcoma (CCS) of the soft tissue is a type of tumor that primarily affects the deep soft tissues of the extremities and trunk. We report a case of CCS of soft tissue arising in the first metacarpal of the hand, focusing on the imaging features of CCS combined with the clinicopathological and immunological results.
CASE PRESENTATION
In this case, computed tomography images showed a soft tissue mass at the first metacarpal, with heterogeneous density, unclear boundaries, and bone destruction. On magnetic resonance imaging (MRI), the mass showed slightly higher signal intensity on T1-weighted images and mixed hyperintensity on T2-weighted images, with inhomogeneous enhancements. On both T1-weighted and T2-weighted sequences, there were some hypointense strips. No significant enhancements were found in these hypointense strips.
CONCLUSION
We suggest that hypointense strips on MRI should lead to the inclusion of CCS in differential diagnoses.
引言
软组织透明细胞肉瘤（CCS）是一种主要累及四肢和躯干深部软组织的肿瘤。我们报告一例发生于手部第一掌骨的软组织CCS病例，重点关注CCS的影像学特征，并结合临床病理及免疫结果。
病例介绍
在此病例中，计算机断层扫描图像显示第一掌骨处有一软组织肿块，密度不均匀，边界不清，并有骨质破坏。在磁共振成像（MRI）上，该肿块在T1加权图像上信号强度略高，在T2加权图像上呈混合高信号，强化不均匀。在T1加权和T2加权序列上均有一些低信号条带。这些低信号条带未见明显强化。
结论
我们认为MRI上的低信号条带应促使在鉴别诊断中考虑CCS。
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