Female, 15 years old, with cerebral cyst, yearly follow-up for changes. Redemonstrated is a cystic lesion located just cranial to the left lateral ventricular atrium which measures up to 10 mm in diameter, previously 10 mm. As on the prior examination, the lesion curves in conformity with the trajectory of adjacent perivascular spaces. FLAIR hyperintensity is redemonstrated along the lateral margin of the lesion which is unchanged.A punctate focus of mild FLAIR hyperintensity within the white matter of the left anterior centrum semiovale is unchanged and nonspecific. No new lesions are seen. Note is again made of generally prominent perivascular spaces.No evidence of significant edema or mass effect is detected. No acute intracranial hemorrhage is seen. Ventricular size and morphology are within normal limits.
Stable small cerebral cyst which is favored to represent a benign etiology such as a dilated perivascular space or perhaps a postinflammatory cyst.