[Patient with Monomorphic Epitheliotropic Intestinal T-Cell Lymphoma with Small Intestinal Perforation Development during Chemotherapy].

Monomorphic epitheliotropic intestinal T-cell lymphoma(MEITL)is classified under type Ⅱ enteropathy-associated T-cell lymphoma(EATL). It is a rare disease with a low incidence rate. This study reports a case of a patient with MEITL who developed small intestinal perforation during chemotherapy. The patient was a 55-year-old woman who presented to a previous clinic with epigastric pain. Enteroscopy results showed a map-like ulcer in the jejunum. Examination of the tissue specimen collected from this site suggested T-cell lymphoma. The patient was referred to our hospital for chemotherapy. Seven days following the initiation of chemotherapy, an abdominal computed tomography(CT)revealed free air, leading to a diagnosis of gastrointestinal perforation. Emergency surgery was performed. Intraoperatively, bowel perforation and a degenerative ulcer were observed at 95 cm and 80 to 115 cm from the Treitz' ligament, respectively. In addition, all-layer intestinal necrosis was noted 150 and 90 cm from the terminal ileum. Total resection and anastomosis were performed. Postoperatively, the patient developed sepsis due to chemotherapy-related pancytopenia but recovered. She was discharged on postoperative day 24. Subsequently, positron emission tomography(PET)-CT revealed residual intestinal tumor cells and peritoneal dissemination. Chemotherapy was initiated, but there was no response. The patient died after 6.5 months. A radical treatment for MEITL has not yet been established. More case reports are needed to improve the prognosis of this disease.