Female, 22 years old, approximately 32 weeks and 4 days gestational age, with intracranial anomalies detected on ultrasound. The cavum septum pellucidum is present and appears slightly prominent. The corpus callosum is distinctly visualized and is fully formed.The lateral ventricles are top normal in size measuring up to 10 mm at the level of the atria. The frontal horns are likely of normal size as well. However, immediately lateral to each frontal horn, and separated from them by what appears to be a thin septation, are relatively symmetric cystic areas measuring 8 mm in diameter. There is a suggestion of volume loss associated with these cystic areas.Gross brain morphology is otherwise unremarkable. The degree of gyration is appropriate for the stated gestational age. The brainstem and posterior fossa are within normal limits. No additional areas of abnormal parenchymal signal are evident. No findings to suggest intracranial hemorrhage are seen.Incidental note is made of polyhydramnios.
Symmetric cystic areas are evident within the bilateral frontal white matter. These are contiguous with and immediately lateral to the frontal horns, and apparently separated from them by a thin septation. Given the suggestion of associated volume loss, these are favored to be pathologic and may represent cystic periventricular leukomalacia which can be related to ischemic or infectious insults. Correlation with laboratory markers of TORCH infection is suggested. The possibility that these represent normal variant connatal cysts is considered less likely.The ventricular system is otherwise normal and the corpus callosum is present and fully formed. No other definite intracranial abnormalities are noted. 