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眼眶肿瘤的CT、MRI诊断 被引量:11

CT and MRI Diagnosis of Orbital Neoplasms
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摘要 目的:探讨眼眶肿瘤的CT、MRI表现及其诊断价值。材料和方法:回顾性分析38例经临床病理证实的眼眶肿瘤的CT、MRI表现。结果:视神经鞘脑膜瘤9例,表现为视神经增粗1例,梭形肿块6例和软组织肿块2例,CT为软组织密度;T1WI呈等或稍低信号,T2WI呈高信号。视神经胶质瘤6例,表现为视神经弥漫性增粗2例,椭圆形肿块4例;CT为软组织肿块;T1WI呈等信号,T2WI呈高信号。海绵状血管瘤12例,CT示类圆形稍高于脑组织密度影,T1WI呈稍低信号,T2WI明显高信号。恶性淋巴瘤4例,均为弥漫性病变,CT示长条状软组织肿块,T1WI呈等信号,T2WI呈高信号。神经鞘瘤3例;CT表现密度不均肿块,T1WI呈稍低信号,T2WI呈稍高信号,信号不均匀。转移瘤4例,其中转移性腺样囊性癌1例,乳腺癌眶内转移3例。结论:CT、MRI是发现和诊断眼眶肿瘤的重要检查手段,对大多数肿瘤可以做出明确诊断。 Purpose: To evaluate the CT and M RI findings of the orbital neoplasms. Materials and Methods: The CT and M RI appearances in 38 cases with orbital neoplasms were analyzed retrospectively, which were confirmed by pathology and clinical follow-up. Results: The optic nerve sheah meningioma was found in 9 cases. Of which, an enlargement of optic nerve was seen in 1 case, fusiform mass in 6 cases,and irregular mass in 2 cases. The tumor showed soft tissues density on CT, and hypo-or isointense mass on T1WI, and iso-or hyperintense mass on T2WI. The optic nerve glioma was found in 6 cases, which showed a diffuse enlargement of optic nerve in 2 cases and fusiform mass in 4 cases. The optic nerve glioma showed soft tissues density on CT, and hypointensity on T1WI and hyperintensity on T2WI. The cavernous hemangioma was found in 12 cases, which showed hypo-or isointense mass on T1WI, and hyperintensity mass on T2WI. The malignant lymphoma was found in 4 cases, which showed posterior to the orbital septum with irregular cast shape in 3 cases, and showed a diffuse infiltrative lesion in one case. The tumors showed hypointensity on T1WI and hyperintensity on T2WI. The neurilemmoma was found in 3 cases, which showed a soft tissues density on CT, and showed hypo-or isointense mass on T1WI, and hyperintensity mass on T2WI. The metastatic tumor was found in 4 cases. Conclusion:CT and MRI is an important examination method for diagnosing orbital neoplasms. and the diagnosis and differential diagnosis of orbital neoplasms in most cases can be made correctly.
出处 《中国医学影像学杂志》 CSCD 2006年第2期107-111,共5页 Chinese Journal of Medical Imaging
关键词 眼眶 肿瘤 CT MRI orbilal neoplasms CT MRI
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