Canine spinal ‘arachnoid cysts’

Dyce, Jonathan; Heritage, M. E.; Houlton, J. E. F.; Palmer, Alan M.

doi:10.1111/j.1748-5827.1991.tb00980.x

Cited by 42 publications

(56 citation statements)

References 7 publications

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“…An altered cerebrospinal fluid (CSF) flow pattern along the spinal subarachnoid space may contribute to the formation of these pseudocysts (DeLahunta and Glass 2009b), although their pathophysiology and the associated myelopathy are poorly understood. Spynal subarachnoid pseudocysts are well known and have previously been described in dogs (Bently et al 1991;Dyce et al 1991;McKeen and Renwick 1994;Hardie et al 1996;Bagley et al 1997;Mauler et al 2012). However, there are only a few reports which describe their occurrence in cats (Shamir et al 1997;Vignoli et al 1999;Schmidt et al 2007;Sugiyama and Simpson 2009).…”

Section: Discussionmentioning

confidence: 99%

Dura mater marsupialisation and outcome in a cat with a spinal subarachnoid pseudocyst: a case report

Pisoni¹,

Cinti²,

Gallucci³

et al. 2014

Vet. Med. - Czech

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A six-month-old male domestic shorthair cat was referred with a history of acute-onset paraplegia, over the previous two months. The neurological examination revealed a thoracolumbar lesion. After myelography and myelo-computed tomography (myelo-CT), the diagnosis of a T13-L1 subarachnoid pseudocyst potentially related to a previous L1 vertebral body fracture or malformation was made. Surgical decompression consisted in dorsal laminectomy followed by durotomy and marsupialisation. Immediately after surgery the cat improved neurologically and showed progressive improvement of his neurological signs over the next few months, until he died, from unrelated causes, approximately 18 months after surgery. Case descriptionA six-month-old male domestic short hair cat with a two month history of acute paraplegia, was referred to the Teaching

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Section: Discussionmentioning

confidence: 99%

Dura mater marsupialisation and outcome in a cat with a spinal subarachnoid pseudocyst: a case report

Pisoni¹,

Cinti²,

Gallucci³

et al. 2014

Vet. Med. - Czech

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“…7 MRI is recommended to identify an intraspinal cystic mass, and the CT-M is used to demonstrate communication between the cysts and the subarachnoid space. 10 Spinal arachnoid diverticula are an uncommon cause of neurologic dysfunction in animals; 10 cases have been reported in dogs, 2,4,6,7,11,12 and 1 case has been reported in a cat. 13 All cases have involved either the cervical or thoracic segments.…”

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confidence: 99%

“…6,12 The remaining cases had no known cause or were incidental findings detected during myelography. 2,4,6,[11][12][13] An association with spinal dysraphism has also been considered. 4 The etiology of arachnoid cysts in humans is uncertain as well.…”

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confidence: 99%

“…2,4,6,[11][12][13] An association with spinal dysraphism has also been considered. 4 The etiology of arachnoid cysts in humans is uncertain as well. Postulated causes include congenital diverticula of the meninges, traumatic herniation of the arachnoid membranes through the dura mater, chronic arachnoiditis, or arachnoid adhesions causing disruption of cerebrospinal fluid dynamics or proliferation of arachnoid membranes creating a 1-way valve that causes cerebrospinal fluid accumulation.…”

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confidence: 99%

“…10 The etiology of arachnoid diverticula in animals is uncertain. 2,4,6,7,[11][12][13] One reported case in a dog was associated with repeated trauma to the spinal column. 6 Two other cases were associated with hemivertebrae.…”

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Spinal Ataxia in a Horse Caused by an Arachnoid Diverticulum (Cyst)

Allison

Moeller

2000

J VET Diagn Invest

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Incoordination or ataxia associated with spinal cord disease is common in the horse. There are many causes of ataxia in horses, including equine degenerative myelopathy, 14 equine protozoal myeloencephalopathy, 15 equine herpesvirus 1 myeloencephalopathy, 9,15 rabies, other viral equine encephalomyelidities, 15 focal cervical injury and trauma, 9,16 fibrocartilaginous ischemic encephalomyelopathy, 16 and intervertebral disc prolapse. 16 Cervical stenotic myelopathy is the major cause of ataxia in young horses. 9,16 Cervical stenosis and the resulting degenerative spinal cord changes are the result of a number of causes, including malformation of the vertebrae with stenosis of the vertebral foramen, malarticulation of cervical vertebrae with malalignment, instability, and subluxation, degenerative osteoarthropathy of intervertebral articular processes with osteophyte formation, enlargement of the vertebral dorsal lamina and ligamentum flavum, 9,16 synovial cyst, 5,16 and occipitoallantoaxial malformation. 16 Here, we report an additional cause of spinal cord compression and ataxia in the horse.An 11-month-old cryptorchid Thoroughbred stallion was presented for necropsy because of progressive ataxia, poor growth, and mandibular swellings. The owner had purchased the colt when it was 7 months old. It was small for its age and had a history of mild ataxia attributed to a head injury sustained when it reared up and fell over backward at 3 Received for publication September 29, 1998. weeks of age. The colt was examined by a veterinarian at 8 months of age to determine the cause of continued failure to gain weight. A cause could not be found, and emperic methylsulfonylmethanol a therapy was recommended. Weight gain improved somewhat, but a swelling developed in the right mandibular region and ataxia became worse. The colt was again examined by a veterinarian, but a cause of the swelling was not determined. Two weeks later another swelling was detected on the contralateral mandibular ramus, and the ataxia was severe. The colt was euthanized at 11 months of age and submitted for necropsy. The mandibular swellings were the result of metastatic testicular leiomyosarcoma. 1 At necropsy, the spinal cord at the level of C6-T1 was soft and markedly flattened dorsoventrally. There was a 15-cm-long collapsed cavity located within the arachnoid of the dorsum and, to a lesser extent, the ventrum of the spinal cord. The affected arachnoid was markedly thickened and translucent to opaque (Fig. 1). The distal end of the cavity was V-shaped, with the apex projecting caudad. The dura and arachnoid were fused at the apex of the cavity, forming a single membrane (twice the thickness of the normal dura) that was firmly adhered to the spinal cord. Content of the cavity was not observed because the vertebral column had been transected to facilitate handling of the vertebral column during spinal cord removal. Neither narrowing of the vertebral canal nor abnormalities of the vertebral bodies or ligaments were observed. No other gross lesions ...

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Miscellaneous Conditions of the Spine

Denny¹,

Butterworth²

2000

A Guide to Canine and Feline Orthopaedic Surgery

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Canine spinal ‘arachnoid cysts’

Cited by 42 publications

References 7 publications

Dura mater marsupialisation and outcome in a cat with a spinal subarachnoid pseudocyst: a case report

Dura mater marsupialisation and outcome in a cat with a spinal subarachnoid pseudocyst: a case report

Spinal Ataxia in a Horse Caused by an Arachnoid Diverticulum (Cyst)

Miscellaneous Conditions of the Spine

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