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mri results

May 12, 2015 - 0 comments
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MRI scan

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MRI

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Dandy Walker Malformation

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arnold chiari syndrome

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Cyst

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history

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mri results



Provided clinical information: 25 years, Male, "chiari malformation
Type I sees Dr Silverstein Rochester and has six cranial sugeries for
hydrocephalus as a child"
Procedure and materials: Standard protocol.
Contrast: None.
Potential limitations: None.
Comparison studies: None.
Observations:
The diploic space of the calvarium is markedly expanded, likely due to
chronic shunted hydrocephalus. There appear to be 2 posterior parietal
approach ventricular catheters within the lateral ventricles. There
also appears to be a left parietal subdural catheter in place. Left
lobe posterior fossa catheter is also noted. The patient reportedly
has a history of Dandy-Walker cyst of the posterior fossa. There does
appear to be residual of this within the left CP angle.

The ventricles are decompressed. In fact, the lateral ventricles
appear slitlike. There are and fourth ventricles are also
decompressed. There is some effacement of the suprasellar cistern with
elevation of the pituitary.

There is no evidence for Chiari malformation.

Periventricular foci of T2 hyperintensity are noted. Otherwise no
significant areas of signal abnormality are identified.

The diffusion-weighted sequences are unremarkable.

IMPRESSION:
Marked thickening of the diploic space likely related to chronically
shunted hydrocephalus. Bilateral posterior approach ventricular
catheters are present along with a left parietal subdural catheter and
left suboccipital catheter. The ventricles appear slitlike. Consider
over shunting although no definite subdural fluid collection is
evident.

Distortion of the posterior fossa without evidence for Chiari
malformation.
Urgency: Routine. This is a routine medical imaging report.
Recommendation: No specific imaging recommendation.

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