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Key Clinical Message Papez' circuit is a unique neural pathway in the limbic system that is correlated with seizure activity. Injuries affecting Papez' circuit are often small and unusual in location but can be identifiable in MRI and functional imaging modalities, which can be helpful in the workup of refractory epilepsy. Abstract The Papez circuit is a unique neural pathway in the limbic system of the brain. We review a patient presenting with recurrent seizures as the main manifestation of Papez' circuit pathology. The radiologic features of ischemia involving the mammillothalamic tract in Papez' circuit were correlated with the seizure activity.