Primary intracranial arachnoid cyst in the elderly: A survey on 39 cases

Yamakawa, Haruki; Ohkuma, Akio; Hattori, T.; Niikawa, Shuji; Kobayashi, Hiroshi

doi:10.1007/bf01402113

Cited by 61 publications

(36 citation statements)

References 21 publications

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“…However, the cyst may become clinically important later on in life because of intracystic hemorrhage, which has been reported in dogs 5 and humans. 19 Alternatively, cyst enlargement because of fluid secretion by the lining cells in the cyst wall 20 or the presence of a ball-valve mechanism 21 have to be considered as pathomechanisms for late onset of clinical signs. Human males are more frequently affected than females are.…”

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confidence: 99%

Clinical and Magnetic Resonance Imaging Characteristics of Quadrigeminal Cysts in Dogs

Matiasek

Platt

Shaw

et al. 2007

Veterinary Internal Medicne

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Background: Quadrigeminal cysts (QC) are the most common intracranial intra-arachnoid cysts in dogs, primarily affecting small breeds. Clinical significance is controversial.Hypothesis: Male, brachycephalic, small breed dogs are predisposed to QC, and objective measurement of parenchymal compression can distinguish clinically relevant QC from incidental findings.Animals: A total of 4,100 client-owned dogs. Methods: A retrospective study that recorded signalment, history, clinical signs, and magnetic resonance imaging features. The degree of brain compression was evaluated in the presence of relevant clinical signs. The percentage compression of cerebellum and forebrain was calculated by comparing the expected to the actual diameter and longitudinal dimension, respectively.Results: QC were diagnosed in 28 dogs, of which 21 (75%) were small breed dogs. Fifteen dogs (54%) were brachycephalic. Eighteen dogs were male, and 10 were female. Cerebellar, occipital lobe, or compression in both areas occurred in 86% (24/28 dogs). Clinical signs included focal and generalized seizures in 5 dogs and cerebellar signs in 6 dogs. Mean occipital lobe compression was 17% (SD 5 4) in clinically affected and 10% (SD 5 3) in normal dogs (P 5 .006). Occipital lobe compression .14% was always associated with clinical signs. The mean cerebellar compression was 18%, but there was no association between compression and clinical signs. The animals were more likely to develop clinical signs if both areas were compressed (P 5 .04).Conclusions and Clinical Importance: Parenchymal compression by QC can be incidental, and other central nervous system diseases must be excluded when assessing the clinical significance of QC. However, occipital lobe compression over 14% is likely to cause clinical signs.

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confidence: 99%

Clinical and Magnetic Resonance Imaging Characteristics of Quadrigeminal Cysts in Dogs

Matiasek

Platt

Shaw

et al. 2007

Veterinary Internal Medicne

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“…However, even after operation, the effective mechanism of cyst growth remains unclear in many cases, and different theories are advanced: ball valve mechanisms [13, 14], active fluid secretion from the cyst wall [9, 15]or osmotic gradients following minor hemorrhage.…”

Section: Discussionmentioning

confidence: 99%

Ectopic Choroid Plexus within a Juvenile Arachnoid Cyst of the Cerebellopontine Angle: Cause of Cyst Formation or Reason of Cyst Growth

Schuhmann¹,

Tatagiba²,

Hader³

et al. 2000

Pediatr Neurosurg

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“…Arachnoid cyst is a result of anomalous splitting and duplication of the endomeninx during neural tube folding. 10,18) Most arachnoid cysts are small and asymptomatic, but a complicated course most typically causing mass effects and obstructive hydrocephalus is occasionally seen. Post-traumatic intracystic and subdural hemorrhage are relatively rare, as a cause of acute intracranial hypertension.…”

Section: Introductionmentioning

confidence: 99%

Middle Cranial Fossa Arachnoid Cyst Presenting With Subdural Effusion and Endoscopic Detection of Tear of the Cyst -Case Report-

Hamada

Hayashi

Umemura

et al. 2010

Neurol. Med. Chir.(Tokyo)

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A 15-year-old boy presented with a case of middle cranial fossa arachnoid cyst associated with subdural effusion and manifesting as headache and vomiting after minor head injury. Computed tomography disclosed a cystic lesion in the left middle cranial fossa and ipsilateral subdural effusion. Fundoscopic examination revealed papilledema. A small tear of the cyst wall was confirmed endoscopically. Fenestration of the cyst was performed under the operating microscope. Postoperative course was uneventful. The tear in the outer wall of an arachnoid cyst may suggest the mechanism of occurrence of subdural effusion associated with middle cranial fossa arachnoid cyst.

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Primary intracranial arachnoid cyst in the elderly: A survey on 39 cases

Cited by 61 publications

References 21 publications

Clinical and Magnetic Resonance Imaging Characteristics of Quadrigeminal Cysts in Dogs

Clinical and Magnetic Resonance Imaging Characteristics of Quadrigeminal Cysts in Dogs

Ectopic Choroid Plexus within a Juvenile Arachnoid Cyst of the Cerebellopontine Angle: Cause of Cyst Formation or Reason of Cyst Growth

Middle Cranial Fossa Arachnoid Cyst Presenting With Subdural Effusion and Endoscopic Detection of Tear of the Cyst -Case Report-

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