Interactive Transcript
0:00
On the left,
0:01
you have a study from September 4, 2018,
0:05
in a patient who had hepatorenal syndrome.
0:08
And what one sees on the images is
0:14
the abnormal signal intensity.
0:15
It's somewhat hazy in its appearance,
0:18
affecting the posterior temporal lobe and the
0:20
occipital lobes and the parietal lobes.
0:23
Let's just highlight that with our magic pen here.
0:28
So this is what I'm referring to,
0:29
is that sort of hazy,
0:31
bright signal intensity that's extending to the
0:34
subcortical white matter fibers,
0:38
associated with bilateral involvement
0:40
of the parietal lobes.
0:42
However,
0:43
this includes the involvement of the occipital
0:46
lobes as we scroll further inferiorly,
0:49
which is again demonstrated to extend all the
0:52
way to the periphery here of the white
0:55
matter of both occipital lobes.
0:59
This is the September 4 study.
1:02
On the right-hand side is the same patient,
1:05
and the study is from October 5th.
1:09
So, basically,
1:10
four and a half to five weeks later.
1:13
And as you can see,
1:16
there is complete resolution of the involvement
1:19
of the occipital lobes,
1:21
as well as the parietal lobes, with no residual,
1:25
no encephalomalacia,
1:27
ventricle size, the same.
1:30
Looks like it's back to normal.
1:32
And that is the typical course that we see with
1:34
posterior reversible encephalopathy syndrome,
1:37
as well as the reversible cerebral
1:41
vasoconstrictive syndrome.
1:43
So, this is the expected and hoped-for resolution
1:47
of PRES over the course of weeks,
1:50
once the underlying etiology for
1:54
PRES has been reversed.
© 2024 MRI Online. All Rights Reserved.