[Angioimmunoblastic T-cell lymphoma suspected to recur in the cranium after complete remission: A case report].

A 46-year-old woman presenting to the Department of Hematology with swelling of the mandibular lymph nodes was diagnosed with angioimmunoblastic T-cell lymphoma (AITL) in June 2013. The patient went into complete remission in December 2013 with chemotherapy; however, she was re-evaluated because of mental confusion during May 2014. In addition to the memory disturbances, elevated cerebrospinal fluid cell count and protein were noted. Fluid attenuated inversion recovery cranial magnetic resonance imaging revealed multiple hyperintense areas in both the mammillary bodies and thalamus accompanied by contrast-enhancing in some areas. The diagnosis of recurrent AITL was made based on the brain biopsy. AITL recurrence in the cranium should be considered in patients exhibiting central nervous system symptoms although such recurrences have not been reported previously.