Presentation
Gradually worsening headache for several days. Otherwise well.
Patient Data
Age: 30 years
Gender: Female
From the case:
Intraventricular simple cyst
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large cystic lesion in the posterior body of the right lateral ventricle
mild dilatation of the temporal and occipital horns of the right lateral ventricle
no contrast-enhancing lesions
Findings are consistent with an intraventricular simple cyst.
Case Discussion
"Intraventricular simple cyst" describes a cystic lesion in the cranial ventricles that follows CSF on all imaging modalities and phases/sequences. The lesion may be lined by arachnoid or ependymal cells, but this is indistinguishable on imaging. Patients are often asymptomatic at presentation, but hydrocephalus can occur.