Demographic data
The characteristics of the patients and stones are shown in Table 1. The median age of the patients was 69 years, and the female/male ratio was 61 (47.3%)/68 (52.7%). While the median stone size was 90 mm, the median stone density (HU) was found to be 1,039. The most frequent primary location of the stones was the pelvis (35.6%), followed by multiple calyceal (20.9%), proximal ureteral (20.1%) and lower calyceal (15.5%) stones.
The median operation time was 65 minutes. UAS was used in 17.8% of the patients. While postoperative stents were placed in 77.5% of the patients, a ureteral catheter was required in 9.3%. After the operation, residual fragments were detected in 10.8% of the patients and not present in 69.7%. Seven (5.4%) patients had postoperative fever, and one (0.7%) developed sepsis.