Introduction:

Rapidly progressive dementia is an entity that has a multiple and heterogeneous etiology. It is characterized by the alteration of two or more cognitive domains in a period of less than 1 to 2 years. The involvement of the central nervous system attributed to mantle cell lymphoma is rare with a poor prognosis and mainly debuts in the late stages of the disease as a relapse.

Case Report:

A 61-year-old male with a history of mantle cell lymphoma who presents a relapse of the central nervous system, given by a clinical course compatible with a rapidly progressive dementia and which is confirmed by flow cytometry studies in cerebrospinal fluid. It presents an adequate response to management with a tyrosine kinase inhibitor (Ibrutinib), resolving clinical symptoms and imaging findings.

Discussion:

The involvement of the central nervous system secondary to mantle cell lymphoma is a rare complication and debuts as a relapse with variable clinical manifestations that requires a timely intervention with the aim of improving patient survival. Therapy with a single agent such as Ibrutinib seems to be a good alternative in cases of refractoriness and neurological involvement.