Jull Philip, Walmsley Gemma L, Benigni Livia, Wenzlow Nanny, Rayner Emma L, Summers Brian A, Cherubini Giunio B, Schöniger Sandra, Volk Holger A
Department of Veterinary Clinical Sciences, Royal Veterinary College, London, UK.
Vet Radiol Ultrasound. 2011 Nov-Dec;52(6):653-7. doi: 10.1111/j.1740-8261.2011.01851.x.
Intramedullary masses are a dilemma due to the limited access for a nonsurgical biopsy, thus, accurate imaging characterization is crucial. Magnetic resonance imaging findings of two confirmed canine thoracic intramedullary hemangiomas are described. A capillary hemangioma was of mixed intensity but predominantly T2-hyperintense and mildly T1-hyperintense to spinal cord with strong contrast enhancement. A cavernous hemangioma had a target-like appearance in both T1-weighted (T1w) and T2-weighted (T2w) images. In T2w images there was a small isointense center surrounded by a relatively large hyperintense area. In T1w images, there was a large isointense centre with a relatively small hyperintense periphery. Such characteristics should prioritize hemangioma as a consideration in a progressive myelopathy due to an intramedullary mass.
由于非手术活检的途径有限，髓内肿块是一个难题，因此，准确的影像学特征至关重要。本文描述了两只确诊的犬胸椎髓内血管瘤的磁共振成像表现。毛细血管瘤呈混合信号强度，但主要为T2高信号，相对于脊髓呈轻度T1高信号，并有明显的对比增强。海绵状血管瘤在T1加权（T1w）和T2加权（T2w）图像上均呈靶样外观。在T2w图像上，有一个小的等信号中心，周围是一个相对较大的高信号区域。在T1w图像上，有一个大的等信号中心，周围是一个相对较小的高信号周边。这些特征应将血管瘤作为髓内肿块导致的进行性脊髓病的一个考虑因素。
