A 34 year-old female patient with generalized non-Hodgkin's lymphoma is reported. The patient presented widespread erythematous plaque over the trunk and extremities tor 6 years, and she was also accompanied by low fever and lymphadenopathy in the inguinal and abdominal cavity. Histopathological changes showed that there was lichenoid infiltration of atypical lymphoid cells and small vessel hyperplasia in the dermis, and no infiltration was observed in the dermis. Immunohistochemistry, PCR, and electron mic...