Craniotomy with Cystoperitoneal Shunting for Treatment of Intracranial Arachnoid Cysts in Dogs

Dewey, Curtis W.; Krotscheck, Ursula; Bailey, Kerry Smith; Marino, Dominic J.

doi:10.1111/j.1532-950x.2007.00287.x

Cited by 18 publications

(41 citation statements)

References 23 publications

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“…10,11,14,[16][17][18][19][20] Subarachnoid diverticula have been reported within the fourth ventricle in five nonbrachycephalic large breed dogs, indicating that the brachycephalic predisposition may only occur for IADs in dogs. Age at presentation varies widely, and is likely related to whether the IAD is incidental or contributes to clinical signs along with another intracranial disease.…”

Section: Clinical Signsmentioning

confidence: 99%

Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain

Platt

Hicks

Matiasek³

2016

Veterinary Clinics of North America: Small Animal Practice

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Section: Clinical Signsmentioning

confidence: 99%

Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain

Platt

Hicks

Matiasek³

2016

Veterinary Clinics of North America: Small Animal Practice

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“…Additionally, parasympathetic denervation to the lacrimal pathway of the facial nerve can also result in loss of tear production. Intracranial cysts are likely developmental in origin and can develop in cerebrum, cerebellum, and brainstem thus may cause cranial nerve dysfunction in human and dogs as well [5,21,29,31]. However, intracranial cysts located in the brainstem are extremely rare in both human and dogs [8,18,21,23,28,31,32].…”

mentioning

confidence: 99%

“…IACs in dogs are sporadically reported and are usually located in the quadrigeminal cistern [5,21,32]. A canine report describing a medullary dermoid cyst was presented in 1998 [29].…”

mentioning

confidence: 99%

“…Instead, medical therapy showed some clinical improvement through reducing increased intracranial pressure and brain edema but the responses are variable [5]. Surgical intervention is considered in cases of symptomatic IAC due to dogs with IAC may respond to medical therapy temporarily [5,19].…”

mentioning

confidence: 99%

“…Syringomyelia designates a fluid filled cavity formation within the spinal cord and is associated with congenital abnormalities or may be complicated with variable disorders including trauma, inflammation, tumor, and hemorrhage [13]. Congenital abnormality of the brain is the more common cause of syringomyelia and especially in small breed dogs, caudal occipital malformation syndrome (COMS) is believed to lead to abnormal CSF flow and to induce cervical syrinx formation [5,7,13]. In this present case, the cervical syringomyelia may be formed by COMS in considering the breed of our patient, but the possibility of secondary syringomyelia is still existent.…”

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confidence: 99%

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Unilateral Facial Paresis Secondary to a Suspected Brainstem Arachnoid Cyst in a Maltese Dog

Kim

Jung

Kang

et al. 2011

The Journal of Veterinary Medical Science

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ABSTRACT. An 8-year-old, intact female Maltese dog was presented with decreased tear production and unilateral loss of eye blinking. Neuro-ophthalmic examination and brain magnetic resonance imaging were performed to determine the origin of facial paresis. A cystic lesion in the left pontomedullary region which displayed equal intensity to cerebrospinal fluid was revealed. Hyposignality was noted on fluid attenuated inversion recovery sequences, and the lesion was suggestive of an arachnoid cyst. This report described unilateral facial nerve dysfunction that resulted from a suspected brainstem arachnoid cyst in an unusual anatomic location.KEY WORDS: arachnoid cysts, brainstem, canine, facial paresis.J. Vet. Med. Sci. 73(4): 459-462, 2011 Facial paresis and paralysis result in facial muscle dysfunction from cranial nerve diseases and injuries [26]. Intracranial and brainstem abnormalities including congenital and neoplastic space-occupying lesions can result in facial nerve dysfunction, which are classified as central in origin. Additionally, parasympathetic denervation to the lacrimal pathway of the facial nerve can also result in loss of tear production. Intracranial cysts are likely developmental in origin and can develop in cerebrum, cerebellum, and brainstem thus may cause cranial nerve dysfunction in human and dogs as well [5,21,29,31]. However, intracranial cysts located in the brainstem are extremely rare in both human and dogs [8,18,21,23,28,31,32]. We described a case of unilateral facial paresis concurrent with lacrimal loss, which was strongly suspected to be caused by a pontomedullary cystic lesion.An 8-year-old, intact female Maltese dog was admitted for evaluation of a unilateral blinking disorder. The patient had been diagnosed as keratoconjunctivitis sicca (KCS) by the referring animal hospital. Topical therapy for KCS including artificial tear, topical antibiotics and cyclosporine showed no improvement. Moreover, sudden onset of blepharoplegia of the left eye (OS) was detected a few days before visiting our referral hospital.The outer appearance of the face was symmetrical. However, the left nostril was drier and more narrowed than the right nostril (Fig. 1A). Marked blepharoedema and mild mucoid ocular discharge were observed bilaterally ( . A neuro-ophthalmic examination revealed a loss of palpebral and corneal reflexes (OS) and the menace response (OS). Direct and consensual pupillary light responses (PLR) and the results of other bilateral cranial nerve tests were normal. The patient was tentatively diagnosed as unilateral facial paresis. As the course of clinical signs was slow and progressive, the presence of primary cause of facial paresis was strongly suspected rather than idiopathic facial paresis which typically showed acute onset. Thus laboratory tests were performed to search the cause of KSC and facial paresis. Otoscopic examination and skull radiography showed no evidence of otitis. The results of routine laboratory test were not remarkable. Reverse transcriptase-polymerase cha...

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Shunt Placement and Marsupialization in Treatment of Hydrocephalus and Quadrigeminal Diverticula

Thomas¹,

Narak²

2017

Current Techniques in Canine and Feline Neurosurgery

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Craniotomy with Cystoperitoneal Shunting for Treatment of Intracranial Arachnoid Cysts in Dogs

Abstract: Craniotomy with CPS placement may be an effective treatment method for dogs clinically affected with IAC.

Cited by 18 publications

References 23 publications

Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain

Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain

Unilateral Facial Paresis Secondary to a Suspected Brainstem Arachnoid Cyst in a Maltese Dog

Shunt Placement and Marsupialization in Treatment of Hydrocephalus and Quadrigeminal Diverticula

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