Arachnoid cyst

Case contributed by Hani M. Al Salam
Diagnosis almost certain

Presentation

Headache.

Patient Data

Age: 25 years
Gender: Male

Brain

ct
This study is a stack
Axial
non-contrast
This study is a stack
Axial C+
arterial phase
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Info

A large CSF attenuation lesion.

Brain

mri
This study is a stack
Axial
FLAIR
This study is a stack
Axial
T1 C+
This study is a stack
Axial
T1
This study is a stack
Axial
T2
This study is a stack
Coronal
T1 C+
This study is a stack
Sagittal
T1
Axial
DWI
Axial
ADC
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Info

A large cystic lesion that follows CSF signal on all pulse sequences representing an arachnoid cyst.

Case Discussion

Arachnoid cyst.

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