perivascular spaces


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

perivascular spaces

The spaces within adventitia of larger blood vessels of the brain. They communicate with the subarachnoid space.
See also: space
References in periodicals archive ?
Enlarged perivascular spaces in the centrum semiovale are associated with poststroke depression: A 3-month prospective study.
Perivascular spaces surround perforating arterioles and venules as they course from the subarachnoid space through the brain parenchyma and serve as an important drainage system for interstitial fluids and solutes in the brain.
homing of bone marrow-derived cells that support vessel growth from the peripheral blood into the perivascular space (23,24).
In our patient, it appeared that the meningeal component of the Cryptococcal infection involved the perivascular spaces at the base of the brain and cerebellar leptomeninges.
According to this hypothesis, the A[beta] peptide converted from APP and released from platelets (Figure 1, red arrows) spreads to the endothelium first and then to the perivascular space (Figure 1, green) and accumulates in the basal lamina.
B-cells and plasma cells are found in perivascular spaces. (1)
[19] suggest that temporal lobe WMHs relate to the numerous fluid-filled perivascular spaces (PVS) or increased number of PVS rather than the presence of lacunar infarcts.
Eosinophilic droplets were also observed mainly in the neuropil next to the perivascular spaces. Both occipital cortices showed markedly diminished thickness, diffuse microspongiosis of the neuropil, neuronal chromatolysis, and neuronal death.
A cribriform pattern (otherwise known as 'honeycombing' or 'sieve-like' appearance) (Figs 2 and 3) was present, caused by dilated perivascular spaces, diffusely involving the bilateral subcortical white matter (WM), centrum semiovale, periventricular deep white matter and corpus callosum.
Dilated perivascular spaces: hallmarks of mild traumatic brain injury.
Nevertheless, in patients with ICH, blood comes into direct contact with the cerebrospinal fluid (CSF) and/or diffuses along the Virchow-Robin perivascular spaces, which according to most authors, remain in direct contact with the CSF [5, 12,17,18].

Full browser ?