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.

[EX Q]: No cases of renal acidosis, and only one case of nephrogenic diabetes insipidus, has been previously reported as a complication of foscarnet treatment.
[EX A]: adverse drug event

[EX Q]: For 9 years the patient remained totally asymptomatic.
[EX A]: non-adverse drug event

[EX Q]: Because etoposide-induced pulmonary toxicity is an uncommon but serious adverse event, clinicians must be vigilant about the possibility of it, so that the optimal treatment can start as soon as possible.
[EX A]:
adverse drug event

