Adult T‐cell leukemia following long‐term remission from non‐Hodgkin's lymphoma

A female patient who had been initially diagnosed with non-Hodgkin's lymphoma (NHL) and achieved complete clinical remission with combined chemotherapy, developed overt adult T-cell leukemia (ATL) after 9 yr of disease-free survival. This is the first case of the development of ATL following the complete remission of NHL. Secondary malignant neoplasms are not well-documented in patients previously diagnosed with Hodgkin's disease. Although there have been a few reports concerning the occurrence of secondary malginancy in patients with non-Hodgkin's lymphoma (NHL), there has never been a documented case of ATL following long-term survival from NHL. Here, we report a case of typical adult T-cell leukemia (ATL) which occurred after 9 yr disease-free survival from NHL.