Cavidades intracranianas ou espinhais contendo líquido cefalorraquidiano, cuja parede é composta por células aracnóides. Na maioria das vezes, são de desenvolvimento ou estão relacionados a traumas. Os cistos aracnóides intracranianos geralmente ocorrem adjacentes à cisterna aracnóide e podem se manifestar com hidrocefalia; dor de cabeça; convulsões; e sinais neurológicos focais. (De Joynt, Clinical Neurology, 1994, Capítulo 44, pp105-115)
Introdução
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Cavidades intracranianas ou espinhais contendo líquido cefalorraquidiano, cuja parede é composta por células aracnóides. Na maioria das vezes, são de desenvolvimento ou estão relacionados a traumas. Os cistos aracnóides intracranianos geralmente ocorrem adjacentes à cisterna aracnóide e podem se manifestar com hidrocefalia; dor de cabeça; convulsões; e sinais neurológicos focais. (De Joynt, Clinical Neurology, 1994, Capítulo 44, pp105-115)
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Publicações mais relevantes
Mostrando amostra de 200 publicações de um total de 1.092
Ictal fear of death with preserved context dependent speech and postictal amnesia in focal epilepsy.
Seizure semiology reflects dynamic interactions among ictal activity, internal state, and environmental context, and often involves distributed neural networks beyond the epileptogenic focus. We report a 27-year-old right-handed, blind, bilingual man with focal epilepsy whose seizures were characterized by intense fear of imminent death, loud and coherent vocalizations, context-dependent bilingual language use, accurate autobiographical references, preserved responsiveness, and complete postictal amnesia. During seizures, the patient consistently addressed his mother in Urdu or English while speaking exclusively in English to medical staff, demonstrating preserved pragmatic awareness; nevertheless, he had no recollection of events afterward and expressed surprise when he heard his ictal vocalizations on the recorded video. Brain MRI revealed a left middle cranial fossa arachnoid cyst abutting the medial temporal lobe and ictal onset was in the right anterior temporal region. This case expands the spectrum of ictal fear and ictal speech by illustrating the convergence of multilingual communication, autobiographical integration, and pure postictal amnesia, highlighting the engagement of distributed limbic, interoceptive, and medial frontal networks.
Spinal extradural arachnoid cyst in the dorsolumbar region: A case report and literature review.
Spinal extradural arachnoid cysts (SEACs) represent <1% of all spinal epidural lesions. They mostly occur in the thoracic region and occasionally are thoracolumbar in location. Typically, patients may be asymptomatic or exhibit pain with/without a neurological deficit. A 44-year-old female presented with a 5-year history of chronic low back pain and intermittent dysesthesia but had no neurological deficits. The magnetic resonance revealed an extradural cyst at D12-L1, isointense to cerebrospinal fluid (CSF) and displacing the dural sac ventrally. The patient underwent a D12-L1 hemilaminectomy for excision of a thin-walled cyst; there were adhesions to the conus, and we encountered no CSF leakage. Postoperatively, pain rapidly improved, and the patient remains asymptomatic. A 44-year-old female presented with pain attributed to a T12-L1 dorsal extradural cyst that was successfully removed through a hemilaminectomy, resulting in full resolution of her pain complaints.
Fourth ventricular pilocytic astrocytoma mimicking an arachnoid cyst: A case report and review of literature.
Arachnoid cysts and pilocytic astrocytomas (PAs) are pathologically distinct lesions. Arachnoid cysts are essentially cerebrospinal fluid (CSF)-filled collections lined by the arachnoid membrane, mostly congenital but sometimes developing later in life. In contrast, PAs are low-grade, solid-cum-cystic brain tumors arising from astrocytes that mainly affect children and young adults. Fourth ventricular PAs are exceptionally rare, with approximately 56 cases reported in the literature since the early 1990s. We report a case of a 20-year-old female who presented with progressive headache, nausea, and gait imbalance. Magnetic resonance imaging (MRI) revealed a nonenhancing cystic lesion in the fourth ventricle, initially suspected to be an arachnoid cyst due to the absence of mural nodules or enhancing solid components. Given her symptomatic presentation, she underwent a midline suboccipital craniotomy with cyst fenestration. Intraoperatively, the appearance of the cyst did not resemble an arachnoid cyst; hence, the cyst wall was sent for histopathological evaluation, which confirmed the diagnosis of PA. Postoperatively, the patient experienced significant improvement in her symptoms, and her neurological examination normalized. Follow-up MRI at 1 year demonstrated no evidence of progression. This case emphasizes the diagnostic difficulty of distinguishing cystic, nonenhancing PAs from arachnoid cysts on imaging alone, particularly in the fourth ventricle of adults. Our findings highlight the critical role of surgical exploration both for symptom relief and for obtaining tissue to establish a definitive diagnosis, as well as the importance of long-term radiological surveillance due to the limited resection achievable in this anatomically constrained region.
Occult cryptococcal meningitis presenting as myelopathy from an arachnoid cyst.
An immunocompromised patient presented with acute-on-chronic back pain following minor trauma. The pain was accompanied by worsening right-sided weakness, paraesthesias, progressive gait impairment and hyperreflexia concerning for compressive myelopathy. The patient's spouse also reported months of increasing forgetfulness. Imaging revealed a thoracic arachnoid cyst, which was treated by fenestration and resection of the cyst via laminoplasty. At the time of surgery, the thickened cyst wall was sent off for pathological evaluation. Postoperatively, pathology identified yeast consistent with cryptococcus; a subsequent lumbar puncture confirmed the diagnosis. Aside from mild cognitive impairment and a transient episode of delirium, the patient had no prior cognitive nor cranial nerve deficits. This case highlights the importance of considering subacute, low-grade infection in the differential diagnosis of de novo arachnoid cysts in immunocompromised patients.
Pulsatile Ptosis in a Young Male Since Childhood.
This case report describes a diagnosis of pulsatile ptosis secondary to orbital bony erosion from an arachnoid cyst.
Publicações recentes
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A 2-month-old infant with an alopecic plaque.
📚 EuropePMC1.652 artigos no totalmostrando 200
Giant Arachnoid Cyst Presenting With Transient Facial Paresthesia: A Case Report.
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Neurology IndiaArachnoid Cyst Associated With Traumatic Chronic Subdural Hemorrhage in Children.
The Journal of craniofacial surgeryA Case of Subdural Hygroma due to a Ruptured Arachnoid Cyst in the Middle Cranial Fossa That Improved after Long-term Subdural Drainage: A Case Report and Review of the Literature.
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World journal of radiologyOutcomes of neuroendoscopy for suprasellar arachnoid cysts: a single center experiences.
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International journal of surgery case reportsPosterior Fossa Arachnoid cysts (PFACs) in pediatric patients: a single-center retrospective study and proposal of a treatment flow-chart.
Acta neurochirurgicaSpinal Adhesive Arachnoidopathy, the Disorder More Than Simply Adhesive Arachnoiditis: A Comprehensive Systematic Review of 510 Cases.
CNS neuroscience & therapeuticsEndoscopic Cystoventricular Stenting in Awake Patients with Electrical Stimulation Mapping for Convexity Cysts: Three Case Reports and a Systematic Review.
World neurosurgeryInsular operculum disconnection and herniation into the parapharyngeal space due to a fetal Galassi Type III arachnoid cyst: a case report.
Frontiers in neuroscienceMinimally invasive management of a spinal arachnoid cyst with ultrasound-assisted catheter placement: illustrative case.
Journal of neurosurgery. Case lessonsUnusual association of cervical arachnoid cyst and idiopathic intracranial hypertension.
Neurosciences (Riyadh, Saudi Arabia)A rare coexistence of a non-dysraphic intradural lipoma and a cyst in the lumbar spine - A case report and literature review.
International journal of surgery case reportsTeaching NeuroImage: Hemorrhagic Arachnoid Cyst.
NeurologyIntraspinal Intradural Arachnoid Web at the Thoracic Level: A Case Report.
CureusIntramedullary arachnoid cyst of the dorsal spine: Report of a rare spinal cord condition.
Radiology case reportsCortical Venous Thrombosis Caused by Venous Compression by Arachnoid Cyst.
The NeurohospitalistSpontaneous Rupture of a Parietal Arachnoid Cyst Causing an Intracystic Hemorrhage and a Subacute Subdural Hematoma.
CureusSymptomatic and Radiographic Improvement Following Surgery for Posterior Fossa Arachnoid Cysts: Meta-Analysis and Literature Review.
World neurosurgeryGiant intracranial arachnoid cyst in an outstanding soldier.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryNontraumatic intra-diploic arachnoid cyst communicating with sphenoid bone and in close proximity to cavernous sinus in a known case of Wilson disease: A rare entity.
Radiology case reportsDiagnosis and surgical treatment strategies for spinal extradural arachnoid cyst: Case report and treatment insights.
International journal of surgery case reportsPediatric spinal arachnoid cysts with compressive myelopathy: single-center experience and update on surgical management.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryArachnoid Cysts in Athletes with Sports-Related Concussion: A Case Series and Literature Review.
Sports medicine - openConcomitant spontaneous subdural and intracystic hematoma in arachnoid cyst: a case report and review of the literature.
Journal of medical case reportsMiddle fossa arachnoid cyst fenestration for ruptured cysts associated with subdural collections: paediatric neurosurgery tertiary unit experience.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgerySpinal Arachnoid Cysts-Our Experience.
Asian journal of neurosurgeryDorsal arachnoid web of the thoracic spine associated with an arachnoid cyst and a presyrinx state as an unexplained cause of thoracic myelopathy: illustrative case.
Journal of neurosurgery. Case lessonsTechnical note: durable resolution of hydrocephalus after ultrasound-guided percutaneous fenestration of giant suprasellar arachnoid cyst in a neonate.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryA Case of Lateral Meningocele Syndrome without Lateral Meningoceles.
Molecular syndromologyNeurosurgical intervention for giant arachnoid cyst-induced hydrocephalus in a teenager: Delving into Pandora's box.
Clinical case reportsSimultaneous resolution of arachnoid cyst and chronic subdural hematoma after middle meningeal artery embolization: illustrative case.
Journal of neurosurgery. Case lessonsWhen is the radiology report of posterior fossa containing cyst/cystic-like CSF collection of clinical or surgical significance?
Journal of neurosurgery. PediatricsElectroconvulsive Therapy With Brain Cyst: A Simulation Study.
The journal of ECTMassive traumatic epidural hematoma in a child with suprasellar arachnoid cyst and hydrocephalus.
Brain injuryAtypical Presentation of Idiopathic Intracranial Hypertension: A Case Series and Literature Review.
Asian journal of neurosurgeryClassification of the relationship between suprasellar arachnoid cyst and hydrocephalus based on treatment modalities: shunting versus neuroendoscopic approaches.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgerySurgical treatment for recurrent thoracic ventral intradural arachnoid cyst secondary to tuberculous meningitis: a case report.
Spinal cord series and casesCognition in children with arachnoid cysts - A five-year follow-up after microneurosurgical fenestration.
Acta neurochirurgicaAn Unusual Case of an Intradiploic Arachnoid Cyst of the Orbit.
Ophthalmic plastic and reconstructive surgerySpontaneous regression of an interhemispheric arachnoid cyst: illustrative case.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryLong term clinical and radiological outcomes following surgical treatment of symptomatic cranial arachnoid cyst: A population based consecutive cohort study.
Clinical neurology and neurosurgerySpontaneous rupture of arachnoid cyst.
Journal of neurosciences in rural practiceFunctional outcomes in intradural extramedullary spinal tumors.
Surgical neurology internationalExtradural spinal cyst in a pediatric patient: A case report.
Surgical neurology internationalThe Role of Phase-Contrast MRI in Diagnosing Cerebrospinal Fluid Flow Abnormalities.
CureusCandida tropicalis endocarditis on the aortic valve with coexisting meningitis in a patient with multiple risk factors - What to do?
IDCasesSubarachnoid Neurocysticercosis Case Series Reveals a Significant Delay in Diagnosis-Requiring a High Index of Suspicion Among Those at Risk.
Open forum infectious diseasesArachnoid cyst in the pediatric patient: What the radiologist needs to know.
The neuroradiology journalExploring the intersection of tuberous sclerosis and precocious puberty unveiled by hematocolpos.
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical NeurophysiologyUnmasking the Common Thief: A Rare Cause of Isolated Hypoglossal Nerve Palsy.
Journal of community hospital internal medicine perspectivesPHACE syndrome: a case report and a comprehensive review.
Annals of medicine and surgery (2012)Description and clinical relevance of the variable conformation of canine spinal arachnoid diverticula.
Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology AssociationA Technical Note on Alternating Laminectomies Plus Folding Cystectomy: A Novel Technique for Spinal Arachnoid Cyst.
CureusGiant suprasellar arachnoid cyst with intractable seizures: excellent outcome after surgical decompression.
Child's nervous system : ChNS : official journal of the International Society for Pediatric NeurosurgeryCoexistence of Trigonocephaly and Sylvian Arachnoid Cysts: A Coincidence?
Pediatric neurosurgeryArachnoid cyst in the quadrigeminal cistern: A case from Afghanistan.
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Referências e fontes
Bases de dados externas citadas neste artigo
Publicações científicas
Artigos indexados no PubMed ligados a esta doença no grafo RarasNet — título, periódico e PMID direto da fonte, sem intermediação de IA.
- Ictal fear of death with preserved context dependent speech and postictal amnesia in focal epilepsy.
- Spinal extradural arachnoid cyst in the dorsolumbar region: A case report and literature review.
- Fourth ventricular pilocytic astrocytoma mimicking an arachnoid cyst: A case report and review of literature.
- Occult cryptococcal meningitis presenting as myelopathy from an arachnoid cyst.
- Pulsatile Ptosis in a Young Male Since Childhood.
- The role of age and Galassi type in management and surgical outcomes of pediatric middle fossa arachnoid cysts: a systematic review and meta-analysis.
- Assessing The Predictive Efficacy of Preoperative MRI Findings in Determining the Location of Dural Defects Associated with Spinal Extradural Arachnoid Cysts.
- Reversible cognitive and gait impairment by a giant quadrigeminal cistern arachnoid cyst: A case report of marked reversal following neuroendoscopic fenestration.
- Symptomatic posterior fossa arachnoid cyst treated with endoscopic cystoventriculostomy in an adult.
- A 2-month-old infant with an alopecic plaque.
Bases de dados e fontes oficiais
Identificadores e referências canônicas usadas para montar este verbete.
- ORPHA:2356(Orphanet)
- MONDO:0008813(MONDO)
- GARD:17(GARD (NIH))
- Busca completa no PubMed(PubMed)
- Artigo Wikipedia(Wikipedia)
- Q624590(Wikidata)
Dados compilados pelo RarasNet a partir de fontes abertas (Orphanet, OMIM, MONDO, PubMed/EuropePMC, ClinicalTrials.gov, DATASUS, PCDT/MS). Este conteúdo é informativo e não substitui avaliação médica.
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