Blake's pouch cyst
Presentation
Infant with macrocephaly, sunset eyes
Patient Data
Age: 2 months
Gender: Male
From the case:
Blake's pouch cyst
CT
Sagittal non-contrast
Severely dilated ventricles. Blake's pouch cyst. Extra axial fluid collection.
From the case:
Blake's pouch cyst
MRI
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Axial T1
Right extra axial fluid collection. Small left posterior subacute subdural hematoma. Dilated lateral and third ventricles. Blake's pouch cyst. Normal appearing cerebellar vermis
Case Discussion
Blake's pouch cyst is a developmental abnormality of the posterior fossa that causes hydrocephalus. In this case the hydrocephalus was severe and present at age 2 months, and there is associated developmental delay.
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