An 11-year-old miniature pinscher presented for acute onset, seizure-like or syncopal episodes. Computed tomography of the head revealed a hyperattenuating, nonenhancing right lateral ventricular mass. Magnetic resonance imaging identified a right lateral ventricular hemorrhagic mass associated with the choroid plexus and disseminated intraventricular and subarachnoid space hemorrhage. Subsequent MRI after 2 months was consistent with a resolving hematoma and residual abnormal choroid plexus conformation. Clinical signs resolved within 1 month on levetiracetam. To the author's knowledge, this is the first reported canine case of a resolving, intracranial, intraventricular hematoma on CT and repeat MRI.
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