Department of Radiology, Capital Medical University, Beijing Tongren Hospital, Beijing 100730, China.
Eur Radiol. 2010 Sep;20(9):2221-8. doi: 10.1007/s00330-010-1774-y.
It is important to distinguish between orbital cavernous haemangioma and schwannoma because the treatments of choice for the two tumours are different. The aim was to evaluate MR imaging findings distinguishing the two tumours.
Magnetic resonance imaging including T1- and T2-weighted imaging and contrast-enhanced MR imaging was performed in 43 patients with cavernous haemangiomas and 16 patients with schwannomas confirmed by pathology. Location, configuration, margins, signal intensity, homogeneity and enhancement pattern of the tumour were retrospectively evaluated.
There was a significant difference between cavernous haemangiomas and schwannomas regarding the location, configuration and margins of the mass, signal intensity and homogeneity on T1- and T2-weighted imaging, the spread pattern of contrast enhancement, the enhancement pattern and the type of time-intensity curve (P<0.05). Markedly homogeneous hyperintensity signal on T2-weighted imaging and the spread pattern of the contrast enhancement favoured cavernous haemangioma rather than schwannoma (P<0.01).
Cavernous haemangiomas and schwannomas have different MR imaging features that could be helpful in the differentiation between the tumours. The spread pattern of the contrast enhancement on dynamic contrast-enhanced MR imaging is the most reliable finding distinguishing cavernous haemangiomas from schwannomas.
区分眶内海绵状血管瘤和神经鞘瘤很重要，因为这两种肿瘤的治疗选择不同。本研究旨在评估 MRI 成像在区分这两种肿瘤方面的表现。
对 43 例经病理证实的海绵状血管瘤患者和 16 例神经鞘瘤患者进行了包括 T1 加权和 T2 加权成像以及对比增强 MRI 的磁共振成像检查。回顾性评估肿瘤的位置、形态、边界、信号强度、均匀性和增强模式。
海绵状血管瘤和神经鞘瘤在肿瘤的位置、形态和边界、T1 加权和 T2 加权成像上的信号强度和均匀性、对比增强的扩散模式、增强模式和时间-强度曲线的类型方面存在显著差异（P<0.05）。T2 加权成像上明显均匀的高信号强度和对比增强的扩散模式有利于海绵状血管瘤而非神经鞘瘤（P<0.01）。
海绵状血管瘤和神经鞘瘤具有不同的 MRI 特征，有助于对这两种肿瘤进行鉴别。动态对比增强 MRI 上对比增强的扩散模式是区分海绵状血管瘤和神经鞘瘤最可靠的发现。
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