leptomeninges

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Related to leptomeninges: meningitis, pachymeninges, Leptomeningeal carcinomatosis

leptomeninges

[¦lep·tō·mə′nin·jēz]

(anatomy)

The pia mater and arachnoid considered together.

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References in periodicals archive ?

L-PGDS is mainly produced in the choroid plexus, leptomeninges, and oligodendrocytes, and then secreted into the CSF.

Transferrin isoforms in cerebrospinal fluid and their relation to neurological diseases

The presence of these two abnormalities represents a phenotypic marker for more profound melanotic infiltration of the leptomeninges, which increases the risk of malignant transformation.

NEUROCUTANEOUS MELANOSIS

Gross brain examination revealed opaque leptomeninges (Fig 1).

Leptomeningeal Carcinomatosis as the Initial Manifestation of Metastatic Disease diagnosed in Postmortem Examination: A Case Series

The painful asymmetric paraparesis in our patient was consistent with subacute painful meningoradiculitis seen in the early dissemination period of neuroborreliosis due to the presence of lymphocytic cell increase in the LP, polyradiculopathy in the EMG and contrast enhancement in leptomeninges, and conus medullaris and cauda equina fibers in the lumbar MRI examination.

A Neuroborreliosis Case Presenting with Asymmetric Painful Radiculoneuritis/Asimetrik Agrili Radikulonevritle Prezente Bir Noroborelyoz Olgusu

The dura, pia and arachnoid of the brain tissue and/or leptomeninges that are defined as a bone defect with herniation continuing to the cranial cavity are clearly separated from the surrounding encephalocele (1).

Nasal heterotopy in a Newborn Infant: A Case Report

Based on a review by Dispenzieri and Kyle, intracranial plasmacytomas or myelomas can be classified into four groups: (1) those extending from the skull pressing inward, (2) those growing from the dura mater or the leptomeninges, (3) those arising from the mucous membranes of a nasopharyngeal plasmacytoma, and (4) intraparenchymal lesions without evidence of extension from any of these other three sites [4].

Multiple Myeloma of the Central Nervous System: 13 Cases and Review of the Literature

MCs are also present in the CNS, mainly located in the perivascular spaces and along the leptomeninges [64, 65].

Emerging Roles of Immune Cells in Postoperative Cognitive Dysfunction

Autopsy revealed a necrotizing infection in the leptomeninges of the brain and spinal cord and numerous microabscesses of the liver.

Bacillus cereus Typhlitis in a Patient with Acute Myelogenous Leukemia: A Case Report and Review of the Literature

For possibility of leptomeningeal metastasis, biopsy of the brain, and leptomeninges was requested.

A Case of Diffuse Leptomeningeal Glioneuronal Tumor Misdiagnosed as Chronic Tuberculous Meningitis without Brain Biopsy

Her initial CT brain with contrast was reported as multiple metastatic brain deposits in leptomeninges, suprasellar, and fourth ventricle.

It is suspected that cancer cells may reach the leptomeninges through hematogenous spread, direct invasion from parenchymal lesions, or spread along the perineurium from cranial or spinal nerves.

Epithelial Ovarian Carcinoma Associated with Metastases to Central Nervous System: Two Case Reports

[4,5] The MRI show that temporal lobe abnormalities such as hyperintense signals on [T.sub.2]-weighted or fluid-attenuated inversion recovery (FLAIR) sequences, atrophic temporal-limbic structures on [T.sub.1]-weighted images, typically without contrast-enhancement in the brain parenchyma or leptomeninges. [6] Limbic encephalitis is a rare paraneoplastic syndrome which is associated with cancer.