Medical

periependymal

per·i·e·pen·dy·mal

(per'ē-e-pen'di-măl),
Surrounding the ependyma.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive
In older patients, MRI findings can align with those of NMOSD, which is associated with extensive involvement of the optic nerves and periependymal areas as well as longitudinal extensive transverse myelitis (LETM).
[6] Typical patterns of brain involvement in NMOSD, although not pathognomonic, include lesions of the dorsal medulla/area postrema, periependymal regions in the brainstem, diencephalic structures, or cerebral hemispheres or long lesions spanning much of the corpus callosum or corticospinal tracts, corresponding to regions of high AQP4 expression.
For example, "NMO-specific" periependymal lesions of the third and fourth ventricles are present in only 7% of NMO patients [4], and the typical NMO lesions in the central medulla are similarly infrequent [17].
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