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Introduction: Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) is a provisional entity in the 2017 WHO classifications of the lymphoid neoplasms, as it was found that features of MEITL differed from those of enteropathy-associated T-cell lymphoma. It is now considered that MEITL is more prevalent in Asia, and almost all cases of intestinal T-cell lymphoma in Asians might be MEITL. To further elucidate the clinicopathologic features of this new disease entity, we carried out a multicenter, retrospective analysis from 9 tertiary institutes in Korea.

Patients and methods: A total of 38 patients who were diagnosed with MEITL between 2002 and 2017 from 9 institutes were included in the analysis. Medical records including age, sex, stage, presenting symptoms, laboratory findings, primary sites, and treatment outcomes were collected. The histopathologic diagnoses were centrally-reviewed by experienced …