2288
We report the occurrence of renal failure due to cholesterol crystal embolization following thrombolytic therapy with intravenous recombinant tissue-type plasminogen activator (t-PA).
 adverse event: occurrence 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 adverse event: occurrence 