Computed tomographic features and temporal evolution of the magnetic resonance imaging features of a resolving intracranial intraventricular hematoma in a dog.

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.