합병증은 수혈, 색전술이 있거나 없는 혈관조영, 낭종검사와 같은 개입이 필요하다고 간주될 때 크게 정의되었다.
Complications were defined as major when an intervention such as blood transfusion, angiography with or without embolization, or cystoscopy was considered necessary.