Early central nervous system relapse of monomorphic epitheliotropic intestinal T-cell lymphoma after cord blood transplantation

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Abstract
Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) is a rare subtype of intestinal T-cell lymphoma that occurs mostly in Asia. CHOP-like therapy is usually selected, but the prognosis is very poor. This report concerns a 43-year-old woman with newly diagnosed stage IVA MEITL. The patient obtained a partial response after 4 cycles of GDP (gemcitabine, dexamethasone, cisplatin) and achieved a complete response (CR) after cord blood transplantation (CBT) conditioned with total body irradiation, cyclophosphamide, and cytarabine. Seven months after transplantation, the patient experienced cognitive impairment. Magnetic resonance imaging of the brain showed a high-intensity lesion in the right cerebral peduncle and internal capsule. A cerebrospinal fluid examination confirmed central nervous system (CNS) relapse of MEITL. After 3 cycles of MPV (methotrexate, procarbazine, vincristine) followed by whole-brain radiotherapy, her cognitive impairment improved. Due to disease progression, she died 6 months after CNS relapse. Given the CNS relapse after achieving a CR with GDP and CBT in this patient, CNS prophylaxis during first-line therapy may be beneficial in the treatment of MEITL.

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