Choroidal fissure and choroidal fissure cysts: a comprehensive review

Altafulla, Juan J; Suh, Seungmo; Bordes, Stephen J; Prickett, Joshua; Iwanaga, Joe; Loukas, Marios; Dumont, Aaron S.; Tubbs, R. Shane

doi:10.5115/acb.20.040

Cited by 12 publications

(4 citation statements)

References 25 publications

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“…There are several types of noncancerous cystic masses resulting from congenital abnormalities with different embryological origins [109]. Choroidal fissure cysts refer to non-cancerous cysts that develop within the choroidal fissure [110]; hippocampal sulcus remnant cysts resemble a "string of beads" between the cornu ammonis and dentate gyrus [111]. The differentiation with PVS is based on their specific location within the brain.…”

Section: Benign Intracranial Cystsmentioning

confidence: 99%

Overview of the Current Knowledge and Conventional MRI Characteristics of Peri- and Para-Vascular Spaces

Parillo,

Vaccarino,

Di Gennaro

et al. 2024

Brain Sciences

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Brain spaces around (perivascular spaces) and alongside (paravascular or Virchow–Robin spaces) vessels have gained significant attention in recent years due to the advancements of in vivo imaging tools and to their crucial role in maintaining brain health, contributing to the anatomic foundation of the glymphatic system. In fact, it is widely accepted that peri- and para-vascular spaces function as waste clearance pathways for the brain for materials such as ß-amyloid by allowing exchange between cerebrospinal fluid and interstitial fluid. Visible brain spaces on magnetic resonance imaging are often a normal finding, but they have also been associated with a wide range of neurological and systemic conditions, suggesting their potential as early indicators of intracranial pressure and neurofluid imbalance. Nonetheless, several aspects of these spaces are still controversial. This article offers an overview of the current knowledge and magnetic resonance imaging characteristics of peri- and para-vascular spaces, which can help in daily clinical practice image description and interpretation. This paper is organized into different sections, including the microscopic anatomy of peri- and para-vascular spaces, their associations with pathological and physiological events, and their differential diagnosis.

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Section: Benign Intracranial Cystsmentioning

confidence: 99%

Overview of the Current Knowledge and Conventional MRI Characteristics of Peri- and Para-Vascular Spaces

Parillo,

Vaccarino,

Di Gennaro

et al. 2024

Brain Sciences

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“…Dagegen bildet sich die Sulcus-hippocampalis-Zyste gewöhnlich zwischen dem Cornu ammonis und dem Gyrus dentatus (▶ Abb.17). Es handelt sich dabei um benigne intrakranielle Zysten, die im MRT isointens zum Liquor sind [8] und in der Regel keine klinische Relevanz haben [49].…”

Section: Zystische Läsionenunclassified

Aspekte der Bildgebung des Hippokampus

Alves¹,

Coutinho²,

Vieira³

et al. 2023

Neuroradiologie Scan

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Der Hippokampus ist aufgrund seiner vielschichtigen Anatomie, seiner erstaunlichen Funktionen, seiner Wechselbeziehungen zu anderen Strukturen und der damit verbundenen Symptome eine der komplexesten Strukturen im Gehirn. Zwar wird diese Struktur schon seit Jahrhunderten analysiert, doch ihre Anatomie und Physiologie im menschlichen Körper sowie die damit zusammenhängenden Krankheitsbilder und potenziellen Biomarker sind nach wie vor Objekte intensiver Forschungsbemühungen. Der Hippokampus kann von einer Vielzahl von Krankheiten betroffen sein. Dabei kann zwischen kongenitalen, degenerativen, infektiösen oder inflammatorischen, neoplastischen, vaskulären oder toxisch-metabolischen Erkrankungen unterschieden werden. Im vorliegenden Beitrag stellen die Autoren die Anatomie samt angrenzenden Strukturen, die Funktion und die Entwicklung des Hippokampus sowie einen neuartigen Algorithmus für die bildgebende Diagnose vor. Dieser Algorithmus berücksichtigt Erkrankungen, die typischerweise den Hippokampus betreffen. Diese werden anschließend zur besseren Eingrenzung der Differenzialdiagnose in noduläre (raumfordernde) und nicht noduläre Krankheitsbilder unterteilt. Die MRT ist das bevorzugte bildgebende Verfahren zur Beurteilung des Hippokampus, aber auch die CT und die Nuklearmedizin können zur Analyse beitragen. Die MRT-Differenzialdiagnose hängt von der anatomischen Erkennung und der sorgfältigen Charakterisierung begleitender Bildgebungsbefunde ab. Beispiele dafür sind etwa volumetrische Veränderungen, Diffusionsrestriktion, ein zystisches Erscheinungsbild, Hyperintensität in der T1w Bildgebung, Kontrastmittelanreicherung oder Kalzifikation. Diese bildgebenden Befunde spielen neben den klinischen Befunden eine zentrale Rolle bei der Diagnose. Einige Krankheitsbilder, die von

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“…Choroidal fissure cysts are benign intracranial cysts that can be either neuroepithelial or arachnoid type and are found at the level of the choroid fissure (Figure 6). 55 In rare cases, these may cause seizures due to mass effect on the temporal lobe. 56 Both types of cysts are usually benign and are found incidentally.…”

Section: Incomplete Hippocampal Inversionmentioning

confidence: 99%

An imaging review of the hippocampus and its common pathologies

Lang,

Colby,

Ashby‐Padial

et al. 2023

Journal of Neuroimaging

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The hippocampus is a complex structure located in the mesial temporal lobe that plays a critical role in cognitive and memory‐related processes. The hippocampal formation consists of the dentate gyrus, hippocampus proper, and subiculum, and its importance in the neural circuitry makes it a key anatomic structure to evaluate in neuroimaging studies. Advancements in imaging techniques now allow detailed assessment of hippocampus internal architecture and signal features that has improved identification and characterization of hippocampal abnormalities. This review aims to summarize the neuroimaging features of the hippocampus and its common pathologies. It provides an overview of the hippocampal anatomy on magnetic resonance imaging and discusses how various imaging techniques can be used to assess the hippocampus. The review explores neuroimaging findings related to hippocampal variants (incomplete hippocampal inversion, sulcal remnant and choroidal fissure cysts), and pathologies of neoplastic (astrocytoma and glioma, ganglioglioma, dysembryoplastic neuroepithelial tumor, multinodular and vacuolating neuronal tumor, and metastasis), epileptic (mesial temporal sclerosis and focal cortical dysplasia), neurodegenerative (Alzheimer's disease, progressive primary aphasia, and frontotemporal dementia), infectious (Herpes simplex virus and limbic encephalitis), vascular (ischemic stroke, arteriovenous malformation, and cerebral cavernous malformations), and toxic‐metabolic (transient global amnesia and opioid‐associated amnestic syndrome) etiologies.

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Choroidal fissure and choroidal fissure cysts: a comprehensive review

Cited by 12 publications

References 25 publications

Overview of the Current Knowledge and Conventional MRI Characteristics of Peri- and Para-Vascular Spaces

Overview of the Current Knowledge and Conventional MRI Characteristics of Peri- and Para-Vascular Spaces

Aspekte der Bildgebung des Hippokampus

An imaging review of the hippocampus and its common pathologies

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