Analysis of perinephric hematoma during minimally invasive percutaneous nephrolithotomy

【Objective】To analyze the diagnosis and treatment of perinephric hematoma during minimally inva-sive percutaneous nephrolithotomy (MPCNL). 【Methods】From December 2004 to January 2008, the data of 1 021 cases who underwent minimally invasive percutaneous nephrolithotomy were retrospectively analyzed. 【Results】11 cases (1.07%) developed perinephric hematoma by ultrasonic diagnosis. Of the 11 cases, 6 cases had only a conser-vative observation, 4 cases received adjustment of nephrostomy tube or intra-ureteral Double-J, pyelolithotomy and hematoma was ridded in 1 case, respectively. All the cases with perinephric hematoma were cured successfully. 【Conclusions】 Diagnosis of perinephric hematoma during minimally invasive percutaneous nephrolithotomy mainly relies on clinical symptoms and ultrasonic examination. Most cases need only conservative treatment. Surgical treat-ment is essential in some cases.