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目的分析研究眶壁转移瘤的CT和MRI特点,提高诊断准确率。方法回顾性分析23例经手术病理证实的眶壁转移瘤的CT和MRI表现,成人组16例,儿童组7例。所有病例均行CT平扫与MR平扫和增强扫描。结果16例成年患者CT表现均为溶骨性骨质破坏和眼眶不规则肿块,9例骨质破坏区邻近的颅内可见扁平不规则肿块;16例MRI表现为骨质破坏区邻近的眼眶和颅内均可见略长T1、略长T2信号的不规则软组织影,增强后呈明显强化。7例儿童患者CT表现均为溶骨性骨质破坏和眼眶不规则肿块,其中2例可见垂直针状高密度影,3例骨质破坏区邻近的颅内可见扁平不规则软组织肿块;MRI显示7例骨质破坏区邻近的眼眶内和6例颅内可见略长T1、略长T2信号不规则的软组织影,其中1例为双侧,增强后呈明显强化;7例双侧眶骨、4例斜坡和双侧岩尖及1例双侧颞骨鳞部骨髓腔呈略长T1、略长T2信号影,增强后呈明显强化。结论眶壁转移瘤的CT和MRI表现有一些特点,有助于诊断和鉴别诊断。
Objective To analyze CT and MRI features of orbital metastases and to improve the diagnostic accuracy. Methods The CT and MRI findings of 23 cases of orbital metastases confirmed by surgery and pathology were retrospectively analyzed. There were 16 cases in adult group and 7 cases in children group. All cases underwent CT scan and MR plain scan and enhanced scan. Results The CT findings of all 16 adult patients were osteolytic bone destruction and orbital irregularities. Nine cases of irregular intracranial tumors were seen in the bone destruction area. The MRI findings of 16 cases were adjacent orbital and Intracranial visible slightly longer T1, T2 signal slightly longer irregular soft tissue shadow, enhanced significantly enhanced. Seven cases of children with osteolytic osteolytic bone destruction and orbital irregular masses, including 2 cases of vertical needle-like high density, 3 cases of bone destruction adjacent to the area of the brain can be seen irregular flat soft tissue mass; MRI showed 7 cases of adjacent bone orbital destruction and 6 cases of intracranial slightly longer T1, T2 signal slightly longer irregular soft tissue, including 1 case of bilateral enhancement was significantly enhanced; 7 cases of bilateral orbital bone, Four cases of slope and bilateral petrous apex and one case of bilateral temporal bone squamous bone marrow cavity slightly longer T1, slightly longer T2 signal shadow, enhanced significantly enhanced. Conclusion The CT and MRI findings of orbital metastases have some features that are helpful for the diagnosis and differential diagnosis.