| 摘要: |
| ［摘要］ 目的 探讨腮腺淋巴上皮瘤样癌（lymphoepitheloma-like carcinoma，LELC）的MRI表现，旨在提高对该病的认识。方法 回顾性分析经病理证实的8例腮腺LELC的MRI表现。结果 8例腮腺LELC均为左侧实性肿块，单发3例，多发5例。深、浅叶均有者4例，浅叶者3例，跨深浅叶者1例。平扫T1WI呈等或稍高信号4例，等信号4例；T2WI呈高信号6例，稍高信号2例；增强后均呈现早期明显强化。完整及不完整包膜并存者4例，不完整分隔者2例，完整包膜者2例，包膜均呈长T1、等T2信号，增强后逐渐延迟强化。边界大部分清晰局部模糊者2例，清晰3例，模糊不清3例。有邻近皮下脂肪、皮肤侵犯6例，无2例。邻近区域有淋巴结转移者6例，无2例。结论 MRI能反映腮腺LELC的影像特点，具有一定特征性。 |
| 关键词: 淋巴上皮瘤样癌 腮腺 磁共振成像 X线计算机体层摄影术 |
| DOI：10.3969/j.issn.1674-3806.2014.07.11 |
| 分类号:R 445 |
| 基金项目: |
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| MRI features of lymphoepithelioma-like carcinoma of the parotid gland |
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ZHOU Xiao-yan, MA Long-bai, HAN Wu, et al.
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MR Room, Department of Radiology, the People′s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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| Abstract: |
| ［Abstract］ Objective To investigate the MRI features of lymphoepithelioma-like carcinoma(LELC) of the parotid gland in order to improve its recognition.Methods The MRI features of 8 cases with LELC of parotid gland proved by pathology were analyzed.Results All cases were solid masses on the left side of parotid gland, single in 3 cases, multiple in 5 cases. Four cases were situated in superficial lobe and deep lobe of the parotid gland, and 3 cases were situated in superficial lobe, and 1 case was situated between superficial lobe and deep lobe. T1-weighted imaging showed 4 cases with isointense or slight hyperintense signals, 4 cases with isointense; T2-weighted imaging demonstrated hyperintense in 6 cases, slight hyperintense in 2 cases. All lesions showed obvious enhancement in the early phase of MRI. There were 4 cases with complete or incomplete capsule, 2 cases with the incomplete partition, 2 cases with complete capsule. The capsules demonstrated hypointense signal on T1-weighted imaging and isointense signal on T2-weighted imaging, which demonstrated delayed enhancement. In 8 cases MRI displayed almost clear borders in 2 cases, clear borders in 3 cases, unclear borders in 2 cases. MRI displayed the subcutaneous fat and skin were involved in 6 cases, and not involved in 2 cases. Regional lymph node metastases were found in 6 cases, were not found in 2 cases.Conclusion LELC of parotid gland exhibits some imaging features on MRI, which can be the clue for the diagnosis. |
| Key words: Lymphoepithelioma-like carcinoma（LELC）, Parotid gland Tomography X-ray computed, magnetic resonance imaging |
