Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

We herein described an additional patient with BCR-ABL (ela2) positive acute lymphoblastic leukemia who developed tumor lysis syndrome after 10-day treatment with imatinib.
adverse drug event

Fatal interstitial lung disease after erlotinib administration in a patient with radiation fibrosis.
adverse drug event

The patient's blurred vision gradually improved, but visual field defect remained.

non-adverse drug event