Surgical Treatment of a Canine Intranasal Meningoencephalocele

Martlé, Valentine; Caemaert, Jacques; Tshamala, Mulenda; Soens, Iris Van; Bhatti, Sofie; Gielen, Ingrid; Piron, Koen; Chiers, Koen; Tiemessen, I; Ham, Luc M. Van

doi:10.1111/j.1532-950x.2009.00534.x

Cited by 23 publications

(53 citation statements)

References 23 publications

(41 reference statements)

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“…38 Seizures stopped after surgical intervention in 1 affected dog. 5 However, in our study, 10 of 17 of dogs presented with seizures responded well to medical treatment with AED. Medical management seems to be a viable treatment option for dogs with only mild neurologic signs.…”

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confidence: 44%

“…30 This theory is supported by the fact that surgical repair of MECs generally results in elimination of seizures. 5,30,31 Several hypotheses have been formulated regarding the pathophysiology of seizures in encephalocele patients, including irritative traction or herniation of involved cortex or hemorrhage, malacia, degeneration white matter, and inflammatory cell infiltrates contributing to abnormal excitability of cortical neurons. 3 Magnetic resonance imaging and histopathology results in this study confirmed that the herniated tissue shows signs of inflammation and hemorrhage.…”

Section: Discussionmentioning

confidence: 99%

“…The reported dogs had different etiologies (likely congenital and acquired after skull fracture), different ages at presentation (neonatal to 6 years old), different localizations of the MC or MEC (1 parietal, 3 intranasal), and variability in the severity of clinical signs and outcomes. [2][3][4][5] In human medicine, the prevalence of congenital MEC is approximately 1/40,000 births. 6 Severe MECs are diagnosed prenatally or at birth, whereas discrete MECs may only cause clinical signs at an adult age.…”

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confidence: 99%

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Clinical features, imaging characteristics, and long-term outcome of dogs with cranial meningocele or meningoencephalocele

2017

Advances in Small Animal Medicine and Surgery

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Background: The term meningoencephalocele (MEC) describes a herniation of cerebral tissue and meninges through a defect in the cranium, whereas a meningocele (MC) is a herniation of the meninges alone.Hypothesis/Objectives: To describe the clinical features, magnetic resonance imaging (MRI) characteristics, and outcomes of dogs with cranial MC and MEC.Animals: Twenty-two client-owned dogs diagnosed with cranial MC or MEC.Methods: Multicentric retrospective descriptive study. Clinical records of 13 institutions were reviewed. Signalment, clinical history, neurologic findings and MRI characteristics as well as treatment and outcome were recorded and evaluated.Results: Most affected dogs were presented at a young age (median, 6.5 months; range, 1 month -8 years). The most common presenting complaints were seizures and behavioral abnormalities. Intranasal MEC was more common than parietal MC. Magnetic resonance imaging identified meningeal enhancement of the protruded tissue in 77% of the cases. Porencephaly was seen in all cases with parietal MC. Cerebrospinal fluid (CSF) analysis identified mild abnormalities in 4 of 11 cases. Surgery was not performed in any affected dog. Seventeen patients were treated medically, and seizures were adequately controlled with anti-epileptic drugs in 10 dogs. Dogs with intranasal MEC and mild neurologic signs had a fair prognosis with medical treatment.Conclusion and clinical importance: Although uncommon, MC and MEC should be considered as a differential diagnosis in young dogs presenting with seizures or alterations in behavior. Medical treatment is a valid option with a fair prognosis when the neurologic signs are mild.

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confidence: 44%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Clinical features, imaging characteristics, and long-term outcome of dogs with cranial meningocele or meningoencephalocele

2017

Advances in Small Animal Medicine and Surgery

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“…In dogs, use of the bregmatic fontanelle, foramen magnum and temporal window have been described (Hudson and others 1990, Saito and others 2001). CT has also been described in the diagnosis of meningocoele/meningoencephalocoele in veterinary medicine (Ohba and others 2008, Martle and others 2009). …”

Section: Discussionmentioning

confidence: 99%

Congenital meningoencephalocoele in a rabbit

Shea¹,

Johnson

Pivetta³

et al. 2014

Vet Record Case Reports

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A three-week-old rabbit was presented with a soft swelling on the dorsal aspect of the cranium and paroxysmal episodes. Ultrasonographic examination revealed that the soft tissue swelling appeared to be a fluid-filled structure directly connecting to the right lateral ventricle. Due to deterioration of the clinical signs, the rabbit was euthanased. Postmortem MRI was consistent with severe hydranencephaly and meningoencephalocoele. Despite the limitations of ultrasonographic evaluation of the brain and postmortem MRI, these imaging modalities provided invaluable data regarding the in situ structure of the lesion as an adjunct to postmortem histopathological examination.

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“…Surgical correction of encephaloceles in man usually results in a favorable outcome, although prognosis depends on the hernia sac size, concurrent comorbidities, and location in the skull . Successful surgical treatment of a meningoencephalocele has been reported in both canine and feline patients . After a review of the electronic databases, no report of surgical correction of an equine meningoencephalocele was found by the authors.…”

Section: Introductionmentioning

confidence: 99%

Surgical correction of a meningoencephalocele in a thoroughbred filly

Buck

Hunt

2019

Veterinary Surgery

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Objective To describe the surgical correction of a closed meningoencephalocele in a thoroughbred filly. Study design Case report. Animal One thoroughbred filly, 1.5 months old at the time of surgery. Methods A meningoencephalocele was identified at birth and diagnosed with radiography and MRI. The abnormal tissue was excised and submitted for histopathology, the dura was closed, and the defect in the skull was corrected with a titanium mesh. Results Histopathology confirmed the presence of neural parenchyma consisting of neurons and glial cells. The filly remained without neurologic deficits 7 months after surgery. Conclusion Surgical correction of a meningoencephalocele was performed and considered successful, with no long‐term neurologic deficits postoperatively. Clinical significance Given the paucity of neural tube defect cases in the equine population, no surgical corrective techniques have been reported in the literature. This Case Report describes the first successful surgical treatment of a meningoencephalocele in a horse.

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Surgical Treatment of a Canine Intranasal Meningoencephalocele

Abstract: A transfrontal craniotomy with excision of the meningoencephalocele and closure of the defect can be an effective treatment for an intranasal meningoencephalocele in dogs.

Cited by 23 publications

References 23 publications

Clinical features, imaging characteristics, and long-term outcome of dogs with cranial meningocele or meningoencephalocele

Clinical features, imaging characteristics, and long-term outcome of dogs with cranial meningocele or meningoencephalocele

Congenital meningoencephalocoele in a rabbit

Surgical correction of a meningoencephalocele in a thoroughbred filly

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