Subependymal grey matter heterotopia and persistent open anterior fontanelle
Presentation
Seizures
Patient Data
There are several non-calcified soft tissue nodularities with attenuation similar to grey matter, along the ventricular margins of the bilateral lateral ventricles, predominantly on the left.
Incidentally seen persistent open anterior fontanelle. Also noted multiple well-defined subcutaneous tumours with microcalcifications throughout the scalp, most consistent with pilomatricomas.
Subependymal nodules along the ventricular margins of the bilateral lateral ventricles, showing similar signal to grey matter on all sequences.
Case Discussion
This is the classic appearance of subependymal grey matter heterotopia. Interestingly, a persistent open anterior fontanelle was incidentally found, an unexpected and rare finding in an otherwise healthy 35-year female.
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