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.

One patient who received clindamycin had liver biopsy findings of marked cholestasis, portal inflammation, bile duct injury and bile duct paucity (ductopenia).
adverse drug event

The use of rituximab has been uncommonly associated with delayed pulmonary toxicity.
adverse drug event

Hematologic evaluation disclosed pancytopenia: red blood cells 283 x 10(4)/mm3; white blood cells 700/mm3; and platelets 8000/mm3.

non-adverse drug event

