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Table 5 Procedure complications are listed according to the modified Clavien score

From: Flexible ureterorenoscopy (RIRS) vs. Mini- percutaneous nephrolithotomy (MINI-PCNL) for renal stones 20–30 mm a prospective randomized study

  Number Percentage
Grade 1: fever 1 2.9
Grade 2: blood transfusion 1 2.9
Grade 3a: urinoma (treated conservatively) 1 2.9
Grade 3b: need an intervention under GA None 0
Grade 4a: organ injury or dysfunction None 0
Grade 4b: multiple organ injury or dysfunction None 0
Grade 5: death None 0