Computed Tomography and MR Imaging of Thalamic Neuroepithelial Cysts

Numaguchi, Yuji; Connolly, Edward S.; Kumra, Arvind; Vargas, E.; Gum, Gregory K.; Mizushima, Akira

doi:10.1097/00004728-198707000-00004

Cited by 16 publications

(15 citation statements)

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“…To our knowledge, there are only four reports of thalamic neuroepithelial cysts [1,2,5] with MR imaging findings in three cases [1,2]. There was pathological correlation in 2 cases.…”

Section: Discussionmentioning

confidence: 86%

“…There was pathological correlation in 2 cases. In one case (case 5), there was no epithelial lining, but the histological material was of limited size, and in the second case [1], a single layer of epithelium was identified. In two cases the thalamic cyst appeared as an incidental finding that did not correlate with the symptoms [migraine headaches [2] and a mild resting tremor of one hand [1]].…”

Section: Discussionmentioning

confidence: 98%

“…They are called pseudoparenchymal cysts when they communicate with the subarachnoid space through a small opening or through a diverticulum of the subarachnoid space [2]. The etiology of the neuroepithelial cysts is still controversial but developmental anomalies are likely [1,6]. Lesions are spherical to ovoid, measure up to several centimeters in size, and may have mass effect.…”

Section: Discussionmentioning

confidence: 99%

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Imaging findings of central nervous system neuroepithelial cysts

et al. 1998

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Neuroepithelial cysts are rare and mostly asymptomatic cerebrospinal fluid (CSF)-like cysts. We describe herein the imaging findings in five patients with neuroepithelial cysts. Two cases of proven and three of presumed neuroepithelial cysts are presented. Three of five are located in the thalamus, a location which is not characteristic for neuroepithelial cysts. In the case of incidental finding of asymptomatic neuroepithelial cyst, clinical and radiological follow-up is indicated and surgical intervention is not necessarily warranted.

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“…To our knowledge, there are only four reports of thalamic neuroepithelial cysts [1,2,5] with MR imaging findings in three cases [1,2]. There was pathological correlation in 2 cases.…”

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Imaging findings of central nervous system neuroepithelial cysts

et al. 1998

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“…The lesion which is seen as round or ovoid in axial section fits well in the choroidal fissure with slight expansion. [4] Sherman et al [5] had studied 34 patients with these types of cysts which fulfil the following criteria in MRI to be included in this group: -no mass effect -no detectable cyst wall -no surrounding edema -no gliosis -no contrast enhancement -homogenous consistency -all sequences resembling CSF intensity. Morioka et al has treated two patients with medication for the partial seizures and no further investigation or management was required.…”

Section: Discussionmentioning

confidence: 99%

Choroidal Fissure Cysts in Children - Pediatrician Dilemma for Follow-up?

Sharma¹,

Sharma²

2016

AIMDR

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Background: Choroidal fissure cyst is a small cyst present in the choroidal fissure and this is a developmental variant. These are location based cysts and can either be of neuroglial or neuroepithelial, or of arachnoid in nature. These are seen as incidental finding in routine radiological cross sectional imaging studies. There is dilemma in follow up of these cysts because of their asymptomatic nature or of some vague complaints and invites a lot of debate on their follow-up. Methods: Five children of age group 10-16 years who reported to the outpatient department with vague headache, vertigo or unexplained seizures were subjected to non contrast computerized tomography (NCCT) or magnetic resonance imaging (MRI) of the head to rule out any intracranial pathology. Results: Three cases were having pure cysts in the brain while other two were found to be having various sizes and types of tuberculomas resembling with that of cystic appearances. One of the brain cyst cases was 14 years old female where NCCT head findings revealed a small cyst in the right choroid fissure location. This was subsequently confirmed as choroidal fissure cyst on multiplanar and multisectional plain MRI study. The other two cystic pathologies were vesicular stage of cysticercosis and posterior fossa arachnoid cyst. Rest of the two were tuberculomas with ring enhancement, which were confirmed on MR spectroscopy. Conclusion: The case with choroidal fissure cyst required special attention because of the concern of patient as well as clinician for the follow up. We reviewed the literature for the fate and follow up of these types of cases.

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“…Presenting signs were of increased intracranial pressure with papilloedema, loss of visual fields, and headaches in patient 1 and gait disturbance, change in mentation, and incontinence in patient 2 Neuroepithelial cysts are considered to arise from the pinching off of a diverticulum from the neuroepithelium lining the primitive ventricular system, producing intracerebral or subarachnoid heterotopic rests of ependymal or choroidal cells. Friede and Yasargil suggest that the pinched off diverticulum is composed of a short segment of neuroepithelium of the wall of the neural tube equivalent to the tela choroidea, explaining the variation found in neuroepithelial cyst wall structure.2 A cyst derived from the wall of the neural tube away from capillaries and choroid plexus would be lined with a ciliated or non-ciliated epithelium directly abutting glia, as in patient 2, whereas a basement membrane would be present if the segment of displaced neuroepithelium was adjacent to vascular structures.…”

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confidence: 99%