Özet:

The aim of this study is to transfer our experience of retrograde intrarenal surgery in the treatment of 2-4 cm renal stones. Tools and Methods: After the approval of the Ethics Board, data between 2014-2019 was scanned.2-4 cm of stone and patients with retrograde intrarenal surgery were included in the study. Patients under the age of 18 were removed. Results: 40 patients were taken to the study.The average age was 49.02±17.56.The number of male patients was 26, the number of female patients was 14. There were 10 patients with SWL history. Preoperative 11 patients were in JJ stent.The first was 17 patients. The average stone size was 22.48±3.67 mm, the stone volume was 2049±1291.89 mm3.The second stone was in 31 patients.The average Hounsfield unit was 1038±359.34 HU. One patient had a middle-pol stone, eight patients had a lower-pol stone, 1 patient had a pelvis stone, 2 patients had a ureteropelvik component stone and 6 patients had a multicalytic stone.The average operation time was 76.15±35.79 minutes. All patients had postoperative JJ stent. Ureteral access cloth was used in 37 patients.Stone loss was provided in 19 patients. Complications were observed in 3 patients. The result: Retrograd intrarenal surgery can be used in the treatment of 2-4 cm kidney stones. Safety is an advantage for this surgery. The need for multiple sessions and the cost are the disadvantages of this method.The prospective and higher patient number of studies are required. RIRC ABSTRACT Aim: The aim of this study was to report our retrograde intrarenal surgery experience for treatment of 2-4 cm sized kidney stones. Materials and Methods: After local ethical committe approval, patient data between 2014-2019 was reviewed. Patients who had been undergone RIRS for 2-4cm sized kidney stones were included. Patients < 18 years old were excluded. Results: There were 40 patients in our study. The average age was 49.02±17.56. Twenty six patients were male, fourteen patients were female. Eleven patients had preoperative JJ stent. Seventeen patients had no operation history. The average stone size was 22.48±3.67 mm. The average stone volume was 2049±1291.89 mm3 . Thirty one patients had opaque stones. The average Hounsfield unit was 1038±359.34 HU. In terms of stone locations, one patient had mid pole stone, eight patients had lower pole stone, one patient had pelvis stone, two patients had ureteropelvic junction(UPJ) stone and six patients had multicaliceal stones. The average operation time was 76.15±35.79 min. All the patients had postoperative JJ stent. In 37 patients UAS was used. Nineteen patients were stone free. Complicatons were seen in three patients Conclusion: Retrograde intrarenal surgery can be used for the treatment of 2-4 cm sized kidney stones. Safety is an advantage for retrograde intrarenal surgery. Need for multiple sessions and cost are disadvantages of retrograde intrarenal surgery. Studies with prospective design and with longer patient follow up are needed. Key words: Experience; Kidney Stones; RIRS