Unenhanced computed tomography findings of renal papillae in patients with a ureteral stone

Purpose: In some patients with a ureteral stone without uretero-hydronephrosis, it is difficult to determine the location of the stone. The objective of the present study was to investigate the changes in renal papillae using unenhanced computerized tomography (uCT) and determine the side of calculi using the renal papillary findings in patients with a ureteral stone. Methods: uCT data from 81 patients were retrospectively reviewed for this study. The inclusion criteria were unilateral ureteral calculi, no renal calculi and no hydronephrosis. For each patient, three measurements of CT attenuation of 0.05 cm2 area were made in the tip of the interested renal papillae, both stone side and non-stone side. Student’s t test was used for statistical analysis. Results: Forty-one right-sided and 40 left- sided isolated unilateral ureteral calculi patients were evaluated by uCT exam. The average attenuations of the tip of the papillae in stone side and non-stone side were 34.1 Hounsfield units (HU) and 30.6 HU, respectively. There was a statistically significant difference between stone and non-stone sides (p< 0.05). Conclusion: During routine practical uCT applications, it can be difficult to distinguish phleboliths, ureteral stone or the existence of non-opaque ureteral stone, so papillae density measurements can be a practical method to identify the existence of ureter stone and its location (side)

Is Access Sheath Essential for Safety and Effective Retrograde Intrarenal Stone Surgery?

Objective: To evaluate the results of retrograde intrarenal surgery (RIRS) with flexible ureteroscope (f-URS), using ureteral access sheath and without the sheath

Does Urinary Bladder Shape Affect Urinary Flow Rate in Men with Lower Urinary Tract Symptoms?

We aimed to investigate the role of urinary bladder shape which may potentially change with advancing age, increased waist circumference, pelvic ischemia, and loosening of the urachus on bladder emptying and UFR. We retrospectively investigated the medical records of 76 men. The patients were divided into two groups according to bladder shapes in MRI scan (cone and spheric shapes). There was a significant difference between the two groups in terms of IPSS, Qmax, Qave, and waist circumference. A positive correlation has been demonstrated between mean peak urinary flow rate measured with UFM and mean flow rate calculated using the CP. There was a significant difference between mean urinary flow rates calculated with CP of cone and sphere bladder shapes. The change in the bladder shape might be a possible factor for LUTS in men and LUTS may be improved if modifiable factors including increased waist circumference and loosening of the urachus are corrected

Does Urinary Bladder Shape Affect Urinary Flow Rate in Men with Lower Urinary Tract Symptoms?

WOS: 000330423900001PubMed ID: 24511301We aimed to investigate the role of urinary bladder shape which may potentially change with advancing age, increased waist circumference, pelvic ischemia, and loosening of the urachus on bladder emptying and UFR. We retrospectively investigated the medical records of 76 men. The patients were divided into two groups according to bladder shapes in MRI scan (cone and spheric shapes). There was a significant difference between the two groups in terms of IPSS, Qmax, Qave, and waist circumference. A positive correlation has been demonstrated between mean peak urinary flow rate measured with UFM and mean flow rate calculated using the CP. There was a significant difference between mean urinary flow rates calculated with CP of cone and sphere bladder shapes. The change in the bladder shape might be a possible factor for LUTS in men and LUTS may be improved if modifiable factors including increased waist circumference and loosening of the urachus are corrected

Does Urinary Bladder Shape Affect Urinary Flow Rate in Men with Lower Urinary Tract Symptoms? (vol 2014, 846856, 2014)

WOS: 00033360810000