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.

Reported here is an unusual case of radiation enteritis which caused a severe sequelae of stricture in the transverse colon as a long-term effect of therapeutic irradiation for uterine cancer, and required a surgical resection.
non-adverse drug event

Clindamycin for treatment of Toxoplasma polymyositis in a dog.
non-adverse drug event

The use of methotrexate (MTX) has been contraindicated for treatment of severe psoriasis in HIV infection on the basis of six previously reported cases in which MTX appeared to potentiate opportunistic infections and accelerate HIV disease.

adverse drug event