[Bilateral hippocampal primary CNS lymphoma: unusual differential diagnosis of rapid progressive dementia].

We report on a 63-year old man suffering from rapid progressive dementia due to bilateral hippocampal primary CNS lymphoma. Early diagnosis especially in secondary dementia is essential because of potentially treatable aetiologies with regression of cognitive and behaviour abnormalities. Characteristic imaging findings especially in inflammatory and neoplastic lesions affecting the hippocampal structures are discussed.
Competing Interests: Interessenkonflikt: Die Autoren geben an, dass kein Interessenkonflikt besteht.
(Georg Thieme Verlag KG Stuttgart · New York.)