Clinical question: Reevaluate cyst. Signs and symptoms: Headache. Pre and post enhanced brain MRI:Negative diffusion weighted series.Examination redemonstrates a small left frontal periventricular cyst without appreciable interval change since prior exam.Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination otherwise.Postcontrast images demonstrate no abnormal enhancement of brain parenchyma or the leptomeninges and no enhancement of the above detailed cyst. This is a similar observation as prior study.The signal void of all major intracranial arterial branches are identified.The signal intensity of intracranial venous sinuses are within normal and the normal pattern of enhancement.Calvarium, scalp, orbits, paranasal sinuses and mastoid air cells are unremarkable.
Stable small left periventricular frontal cyst since prior exam and unremarkable pre and post enhanced brain MRI otherwise.