Intracranial arachnoid cysts: Epileptic seizures

Murthy, Jagaralapudi Murali K.

doi:10.4103/0028-3886.117580

Cited by 11 publications

(19 citation statements)

References 9 publications

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“…19 Seizures and headaches are the most common clinical signs in humans, probably because of the more common supratentorial location of the diverticulae 23 ; hydrocephalus secondary to obstruction of the mesencephalic aqueduct by the lesion is an important pathologic mechanism that can lead to clinical signs, such as seizures, mental retardation, and headaches. 8,23,[27][28][29]31 This is not commonly documented in dogs and has only been reported rarely. 18,19 Some investigators believe that the breed predisposition for ventriculomegaly, where observed, is the same as the predisposition for IADs, indicating that these two developmental disorders may have a common cause given that there is inadequate evidence that the diverticula are the cause of hydrocephalus in dogs affected with both.…”

Section: Clinical Signsmentioning

confidence: 98%

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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: 98%

“…5,18 Craniotomy with cyst resection and endoscopically assisted fenestration has been very successful in humans. 8,23,27,29,32 However, considering that IADs are often an incidental imaging finding in dogs and humans, 19,28 other causes of neurologic signs should be ruled out before considering surgical intervention. 18 …”

Section: Clinical Signsmentioning

confidence: 98%

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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“…[ 10 ] found that EEG abnormalities corresponded to cyst location in only one patient. Analyzing the association between intracranial AC's and seizures, Murthy[ 11 ] has suggested that in presence of identifiable epileptogenic factors AC's may be incidental whereas in cases where no other cause can be found the association between AC's and epilepsy is more likely. As our patient had PVN seen on imaging, we did not consider that AC was causal in his seizures and did not proceed with surgery for the same.…”

Section: Discussionmentioning

confidence: 99%

Periventricular nodular heterotopia, frontonasal encephalocele, corpus callosal dysgenesis and arachnoid cyst: A constellation of abnormalities in a child with epilepsy

2014

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A 7-year-old male child presented with poorly controlled generalized tonic-clonic seizures. On examination, he was mentally retarded, deaf and had a swelling at the root on the nose. Computed tomography scan done previously revealed a left temporal arachnoid cyst (AC) due to which he was referred for surgery. However, magnetic resonance imaging revealed a constellation of abnormalities – all of which could be responsible for his seizures. The combination of periventricular nodular heterotopias with encepaholcele is rarely described in the literature, and more infrequently so its combination with AC and callosal dysgenesis – the Chudley-Mccullough syndrome. We describe the case and review relevant literature on this subject.

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“…Intracranial arachnoid cysts (IACs) are benign, intraarachnoidal developmental anomalies containing a substance resembling cerebrospinal fluid [2,5,6,9,12,15,17,[23][24][25]. In adults, they account for about 1.5-2.3% of all intracranial masses [1,9,17,18,24] and are most commonly encountered in the middle cranial fossa, in accordance with the Sylvian and choroidal fissure [2,6,17].…”

Section: Introductionmentioning

confidence: 99%

“…In 4-14% of cases, IACs are accompanied by seizures [6,9,17]. Since most cysts do not cause any symptoms, many lesions remain clinically silent and are found incidentally [2,6,12,14,15,17,25]. As these lesions can be slow-growing, they can become symptomatic over time and may even give rise to epileptic seizures [1,6,9,10,15,17,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Controversial Association Between Intracranial Arachnoid Cysts and Epileptogenesis: a Case Report and Review of the Literature

Broekx

Vandevenne

Weyns

2020

SN Compr. Clin. Med.

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Intracranial arachnoid cysts (IACs) are benign, slow-growing developmental anomalies. In 4-14% of cases, IACs are accompanied by seizures. Since most cysts do not cause any symptoms, many lesions remain clinically silent and are found incidentally. As these lesions are slow-growing, they can become symptomatic over time and may give rise to epileptic seizures. Since IAC localization and seizure focus do not always coincide, a unifying theory between IACs and epileptogenesis is still lacking. We present a case of a 49-year old man who presented himself as a result of a first tonic-clonic insult. No major risk factors nor antecedents in his medical history were present. MRI confirmed a voluminous cystic lesion at the transition of motor cortex and supplementary motor area. Due to the large volume (with risk of cyst rupture) and compatible clinical, radiographic, and electroencephalographic features, cyst fenestration through craniotomy was performed. Epileptic seizures were resolved completely after this procedure. IACs are not uncommon and are frequently encountered incidentally in patients who present with epilepsy. Some authors have been classifying this association as rather exceptional. However, we illustrated a case in which excellent surgical results were obtained in a patient with focal epilepsy in which both clinical and electroencephalographic features were compatible with arachnoid cyst localization. Therefore, in patients with no other identifiable causes for epilepsy, thorough evaluation should be performed and surgical intervention should be considered. We developed a flowchart in order to guide clinicians in the appropriate approach of these patients. Therefore, this summary could serve as a scaffold for future highquality studies concerning this topic.

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Intracranial arachnoid cysts: Epileptic seizures

Cited by 11 publications

References 9 publications

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

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

Periventricular nodular heterotopia, frontonasal encephalocele, corpus callosal dysgenesis and arachnoid cyst: A constellation of abnormalities in a child with epilepsy

Exploring the Controversial Association Between Intracranial Arachnoid Cysts and Epileptogenesis: a Case Report and Review of the Literature

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