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]: Primary CNS lymphoma complicating treatment of myasthenia gravis with mycophenolate mofetil.
[EX A]: adverse drug event

[EX Q]: Clindamycin for treatment of Toxoplasma polymyositis in a dog.
[EX A]: non-adverse drug event

[EX Q]: The corneal ulcer progressed despite aggressive antifungal treatment, requiring amputation of the corneal flap and daily debridement.
[EX A]:
non-adverse drug event