RESUMEN
This article is the case report of the peripheral T-cell lymphoma which involove the stomach, small bowel, and colon. A 40-year-old male was admitted to Inha University hospital because of epigastric pain, diarrhea, and weight loss. He was taken by gastrofiberscopy with biopsy, upper G-I series, colonscopy with biopsy, lower G-I series, ultrasonogram, and abdominal computerized tomogram. Endoscopic picture demonstrated the malignant ulcer in the posterior wall of angle. Sigmoidoscopic picture demonstrated the polipoid hyperemic mucosal edema. In the X-ray & endoscopic findings, the lesion was suspected as lymphoma. Histologically, the lesion was diagnosed as peripheral T-cell lymphoma. Immunohistochemical staining using UCHL-1(pan-T-cell maker) demonstrated the lymphoma as T-cell origin. The patient was treated with the multiagent chemotherapy(Bleomycin + Vincristin + Cyclophosphamide + PDS).