We report an elderly patient with diffuse large B cell lymphoma harbouring Epstein-Barr virus that showed spontaneous regressions with subsequent relapses three times. The patient died of aspiration pneumonia without any anti-neoplastic treatment 5 years 10 months after the initial onset of lymph node swelling. In the literature, there are several reports of aggressive non-Hodgkin's lymphoma cases that showed spontaneous regressions without relapse till the last observation. Over half of the cases were the extra-nodal type. The tendency toward regression of swollen lymph nodes detected by clinicians occurs within 2 weeks after biopsy. If the remaining lymph nodes show a tendency to decrease in size after biopsy without any anti-tumor therapies, the patient may develop spontaneous regression.

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