Philip D. Koblik is deceased.
INTRACRANIAL INTRA-ARACHNOID CYST WITH INTRACYSTIC HEMORRHAGE IN TWO DOGS
Article first published online: 19 MAY 2005
Veterinary Radiology & Ultrasound
Volume 43, Issue 5, pages 449–454, September 2002
How to Cite
Vernau, K. M., Lecouteur, R. A., Sturges, B. K., Samii, V., Higgins, R. J., Koblik, P. D. and Vernau, W. (2002), INTRACRANIAL INTRA-ARACHNOID CYST WITH INTRACYSTIC HEMORRHAGE IN TWO DOGS. Veterinary Radiology & Ultrasound, 43: 449–454. doi: 10.1111/j.1740-8261.2002.tb01032.x
- Issue published online: 19 MAY 2005
- Article first published online: 19 MAY 2005
- Received July 21, 2001; accepted for publication January 10, 2002.
- arachnoid cyst;
- magnetic resonance imaging
Clinical signs, magnetic resonance imaging (MRI) features, treatment, and outcome of two adult dogs with neurologic dysfunction resulting from hemorrhage into a quadrigeminal intracranial intra-arachnoid cyst are described. In dog 1, the cyst was hyperintense to cerebrospinal fluid (CSF) on T1-weighted MRI and hypointense to CSF on T2-weighted images. In dog 2, the cyst was isointense to CSF on T1- and T2-weighted images. Both dogs were treated with craniotomy and cyst fenestration. A large blood clot was removed from the lumen of the cyst in each dog. Dog 1 is clinically normal 3.5 years post-surgery and has a persistent cyst. Dog 2 had a good initial response to therapy but was euthanized 2.5 years post-operatively due to generalized seizures. The late onset of clinical signs in these dogs most likely resulted from hemorrhage into the cyst. Surgical fenestration and hematoma removal appear to provide a satisfactory treatment for adult dogs with an intracranial intra-arachnoid cyst and intracystic hemorrhage. Persistence of the cyst may occur in some dogs.