Abat, DenizBorekoglu, AliAltunkol, AdemKose, Ilgaz CagatayBoga, Mehmet Salih2024-09-182024-09-1820211661-76491661-7657https://doi.org/10.1097/CU9.0000000000000019https://hdl.handle.net/20.500.12483/9497Background:We aimed to determine if the ratio of the upper to the lower diameter of the ureter could have any predictive value for ureteral stone impaction.Materials and methods:Patients who had a solitary unilateral ureteric stone, determined by noncontrast computerized tomography, were assessed if they had undergone ureteroscopic lithotripsy. A total of 111 patients, 84 males (76%), and 27 females (24%), were recruited to the study. Demographic data of the patients and preoperative radiological parameters based on noncontrast computerized tomography were recorded. The impaction status was also assessed during the operation.Results:Of the 111 patients, ureteral stones in 63 (57%) patients were determined to be impacted, and ureteral stones in 48 (43%) were nonimpacted. Impacted stones were more common in older patients, female patients, and patients with an American Society of Anesthesiologists score of 2.Conclusions:Significant relationships were found between the impaction status and transverse stone length, longest stone length, upper diameter of the ureter, ratio (upper diameter of the ureter/lower diameter of the ureter), and anteroposterior diameter of the pelvis. These parameters were higher in patients with impacted stones.eninfo:eu-repo/semantics/openAccessDiameterImpactionRatioUreteral stoneArticle15316116610.1097/CU9.000000000000001934552456WOS:000906546900007N/A