A case of adult T-cell leukemia/lymphoma was reported in a child of korean born Japanese. A 34-year-old man, suffering from upper abdominal pain, general fatigue and fever for a week, admitted on July 10, 1982. At admission, he had generalized lymphadenopathies, and his peripheral leukocytes count was 84,200/mm3 with 46% leukemic cells containing convoluted nucleus. In the bone marrow, 25.2% of nucleated cells were leukemic cells. Anti-ATLA antibody was 10-times positive. A histology of biopsied lymph node was compatible with that of non-Hodgkin's lymphoma, pleomorphic type. Based on above-mentioned findings, this case was diagnosed as adult T-cell leukemia/lymphoma. The parents of this patient were born in south-east Korea, and later emigrated into Japan. The patient was born and brought up at Ikeda City, Osaka. To our knowledge, there have been no report describing ATL in Korean.
