Keywords:
CNS, Neuroradiology brain, CT, MR, Education, Cerebrospinal fluid
Authors:
T. V. P. Morais1, C. T. F. Perry da Câmara1, C. Pinheiro1, M. C. Diogo2, C. Conceição1; 1Lisbon/PT, 2Vienna/AT
DOI:
10.1594/ecr2018/C-1499
Aims and objectives
Perivascular spaces (PVS) are normal anatomical variants that manifest as frequent incidental findings in brain imaging.
Enlarged PVS are benign expansions of the fluid compartments that normally surround the blood vessels as they penetrate through the substance of the brain.
They are generally asymptomatic,
but may serve as a marker for underlying pathologic processes.
When presenting with classic characteristics - along perforating vessels and preponderance in the basal ganglia,
centrum semiovale,
and midbrain - these are readily identifiable.
However,
cases with atypical imaging features may be difficult to diagnose; furthermore,
specific pathologies present with characteristic enlarged PVS.
The aim of this paper is to present differential diagnosis of enlarged PVS.