Abstract
We report an autopsy case of Epstein-Barr virus (EBV)-infected malignant lymphoma in a young male who had hypersensitivity to mosquito bites. The autopsy revealed multiple confluent lymphoma lesions in the lungs, and on the right leg irregular-shaped skin ulcers were seen. The left pleural effusion also contained a large number of lymphoma cells. The lymphoma cells were determined as T/NK-cell type cells by immunohistochemistry. EBV DNA was detected most intensively in the lungs and EBV-encoded small RNAs-positive lymphoma cells were also observed in the lungs at a high frequency. EBV latent membrane protein-1 expression and a high Ki-67 labeling indices were noted in the lymphoma cells of the lung lesions. These findings indicate that the development of the malignant lymphoma was associated with the proliferation of EBV-infected lymphoma cells, and the cells that infiltrated the whole the body, especially the lungs, caused the patient's death.
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