leptomeninges

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leptomeninges

[¦lep·tō·mə′nin·jēz]
(anatomy)
The pia mater and arachnoid considered together.
References in periodicals archive ?
The leptomeningeal "ivy sign" on fluid-attenuated inversion recovery MR imaging in Moyamoya disease: a sign of decreased cerebral vascular reserve?
The complication of leptomeningeal cyst formation following linear skull fractures in young children, though rare, has been identified since the nineteenth century beginning with John Howship's report in 1816.
These were "sarcomatosal" modifications in the region of the fibrous leptomeningeal reaction, in the area of the infiltrating glioma.
The clinical manifestations include an acute interstitial pneumonitis [3,4] and haemophagocytic syndrome [5], and less frequently neuropathic problems including polyneuropathies, leptomeningeal and CNS infiltration, as well as myasthenia gravis [6].
The classic findings in the brain are unilateral or bilateral leptomeningeal angiomas (vascular malformations, not a tumor), hypoplastic cortical vessels, and an increase in size of the deep, draining venous structures.
There was no evidence of leptomeningeal metastasis coating the surface of the cord.
It is more frequently associated with B-symptoms and extranodal disease, particularly bone marrow, GIT, liver and leptomeningeal involvement, as well as involvement of unusual sites like the skin or lung.
In mammals, leptomeningeal proliferative changes and integumentary hyperkeratosis are both manifestations of vitamin A deficiency.
3) Leptomeningeal and cortical biopsies are the diagnostic procedures of choice in the absence of angiographically proven cerebral vasculitis.
Children under 2 years old with leptomeningeal cysts from a linear fracture develop these "growing" fractures, which typically occur within 6 months of the injury and widen with time.
Shachar will present the current stage of development of the MBP; the importance and advantages of metronomic local delivery with biofeedback capabilities; features of the MBP and its potential benefits to patients with Leptomeningeal Carcinomatosis; and the improvements in the quality and duration of life that the MBP is expected to achieve.
B) Glial leptomeningeal heterotopy showing congestive blood vessels (arrowhead) and foci of glial heterotopia (arrows).