871
This case describes a 52-year-old white woman who developed a spontaneous nasal septal perforation after given the antiangiogenic drug, bevacizumab, for metastatic ovarian cancer treatment.
 adverse event: developed 
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: developed 