Predictive Value of Preoperative Unenhanced Computed Tomography During Ureteroscopic Lithotripsy: A Single Institute's Experience
Korean Journal of Urology
;
: 772-777, 2013.
Article
in English
| WPRIM
| ID: wpr-31001
ABSTRACT
PURPOSE:
Ureteroscopic stone removal is frequently used to remove ureteral stones. Mucosal edema and bleeding are the two most important obstacles to a successful operation. This study analyzed relationships between unenhanced computed tomography (UECT) findings and ureteroscopic findings to determine whether ureteroscopic results could be predicted preoperatively by using UECT imaging. MATERIALS ANDMETHODS:
From January 2009 to July 2011, 675 patients were diagnosed with ureteral stones through UECT. Among them, we retrospectively reviewed 92 cases of patients who underwent ureteroscopy (URS). We identified findings such as hydronephrosis, rim sign, periureteral fat stranding, and perinephric fat stranding on the UECT and then categorized these findings into four categories (none, mild, moderate, and severe) according to their severity. We also divided the URS findings of mucosal edema and bleeding into four categories (none, mild, moderate, and severe) and compared these findings with the UECT images.RESULTS:
A total of 92 study patients were included in this study 59 were male and 33 were female patients. According to the location of the stone, 31 cases were classified as upper ureteral stones, 15 were midureteral stones, and 46 were lower ureteral stones. Hydronephrosis identified with UECT was correlated with the mucosal edema severity observed during URS (p=0.004). The rim signs identified with UECT were proportional to the grade of mucosal edema (p=0.010).CONCLUSIONS:
Hydronephrosis and rim signs observed during UECT can be used as a predictive factor for intraoperative mucosal edema in patients undergoing URS.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Ureter
/
Lithotripsy
/
Ureteral Calculi
/
Tomography, X-Ray Computed
/
Retrospective Studies
/
Ureteroscopy
/
Edema
/
Hemorrhage
/
Hydronephrosis
Type of study:
Observational study
/
Prognostic study
/
Risk factors
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Korean Journal of Urology
Year:
2013
Type:
Article
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