Vernau K M, Kortz G D, Koblik P D, LeCouteur R A, Bailey C S, Pedroia V
Veterinary Medical Teaching Hospital, University of California-Davis 95616, USA.
Vet Radiol Ultrasound. 1997 May-Jun;38(3):171-6. doi: 10.1111/j.1740-8261.1997.tb00835.x.
Magnetic resonance imaging (MRI) and computed tomographic imaging (CT) characteristics of intracranial intra-arachnoid cysts in six dogs are described. Of the six dogs, three were less than one year of age and 4 were males. Five of the six dogs weighed less than 11 kg. Five cysts were located in the quadrigeminal cistern. On CT images, the intracranial intra-arachnoid cysts had sharply defined margins, contained fluid isodense to CSF and did not enhance following i.v. administration of contrast. On MRI images, the intracranial intra-arachnoid cysts were extra-axial, contained fluid isointense with CSF and did not enhance following i.v. contrast. While spinal arachnoid cysts of dogs have been reported in the literature, other than the six dogs contained in this report, intracranial intra-arachnoid cysts have not to our knowledge been described in animals. These six dogs have a similar age, sex, history, clinical signs, CT and MRI findings to those reported in people with intracranial intra-arachnoid cysts.
本文描述了6只犬颅内蛛网膜囊肿的磁共振成像（MRI）和计算机断层扫描成像（CT）特征。6只犬中，3只年龄小于1岁，4只为雄性。6只犬中有5只体重小于11千克。5个囊肿位于四叠体池。在CT图像上，颅内蛛网膜囊肿边界清晰，囊液密度与脑脊液等密度，静脉注射造影剂后无强化。在MRI图像上，颅内蛛网膜囊肿位于脑外，囊液信号强度与脑脊液等信号，静脉注射造影剂后无强化。虽然文献中已报道犬的脊髓蛛网膜囊肿，但据我们所知，除本报告中的6只犬外，动物颅内蛛网膜囊肿尚未见描述。这6只犬的年龄、性别、病史、临床症状、CT和MRI表现与人类颅内蛛网膜囊肿的报道相似。
