article_snippet: Medical staff were initially confident that chemotherapy would cure David Acott.
article_snippet: Some of the white blood cells may undergo mutations that render Some of the cells affected malignant, giving rise to a lymphoma, or group of blood cell tumours.
article_snippet: Antiviral drugs can be used as can chemotherapy in more serious cases.
article_snippet: It is mainly fatal in cases where it progresses to a lymphoma.
highlights_snippet: PTLD was given chemotherapy - but PTLD failed to respond to treatment .