Presentation
Seizure-like activity. No past medical history.
Patient Data
Non-contrast CT of the head demonstrates absence of the septum pellucidum. There is mild squaring of the frontal horns of the lateral ventricles. The remainder of the examination is normal with no evidence of hemorrhage, infarct, or mass.
Case Discussion
This is a case of seemingly isolated absent septum pellucidum. MRI is required to ensure other more subtle abnormalities are not present.
The patient presented with one episode of seizure-like activity and underwent cross-sectional imaging in the emergency department to evaluate for underlying etiology. The imaging was negative for stroke, hemorrhage, or mass, but the septum pellucidum was incidentally found to be absent. This finding can be isolated, or part of a wider spectrum of disease affecting the neuroaxis. The patient was discharged and has been seizure free.
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