What causes periventricular white matter?
Major causes of periventricular white matter (PWM) lesions include normal changes from aging (then they are called UBO’s, for “unidentified bright objects), small strokes, and disorders related to multiple sclerosis (MS). PWM are also correlated with vitamin B6 (pyridoxine) deficiency.
What causes periventricular white matter hyperintensities?
White matter hyperintensities (WMH) in the brain are mostly caused by cerebral small vessel disease linked to traditional vascular risk factors,1, 2 and they have been associated with subsequent stroke3, 4 mortality,5 cognitive impairment,6, 7 and functional impairment8 — cross-sectionally,9 at 3 months,10 and over 4 …
What does periventricular lesion mean?
A periventricular lesion is defined as a T2-hyperintense cerebral white matter lesion in direct contact with the lateral ventricles, without intervening white matter. Lesions abutting (touching) the ventricles and located in the corpus callosum are included in this definition (Fig. 1 and Table 2).
What does the periventricular part of the brain do?
Periventricular white matter is composed of bundles of myelinated nerve fibers (axons). These bundles appear “white” due to the heavy myelination of these fast-conducting fiber tracts, which convey motor and sensory information to their targets within the spinal cord and cerebrum, respectively.
Are periventricular lesions always MS?
Background. The presence of periventricular lesions (PVL) on MRI scans is part of the revised McDonald multiple sclerosis (MS) diagnostic criteria. However, PVL can be found in other neurological diseases including stroke and migraine. Migraine is highly prevalent in patients with MS.
What does periventricular mean in medical terms?
Medical Definition of periventricular : situated or occurring around a ventricle especially of the brain periventricular white matter.
Where is the periventricular area in the brain?
Periventricular leukomalacia (PVL) is a softening of white brain tissue near the ventricles. The ventricles are fluid-filled chambers in the brain. These are the spaces in the brain that contain the cerebrospinal fluid (CSF). The white matter is the inner part of the brain.
Can you have lesions and not have MS?
About 5 percent of people who are confirmed to have MS do not initially have brain lesions evidenced by MRI. However, the longer a person goes without brain or spinal cord lesions on MRI, the more important it becomes to look for other possible diagnoses.