Imaging-based assessment of the mineral composition of urinary stones: an in vitro study of the combination of hounsfield unit measurement in noncontrast helical computerized tomography and the twinkling artifact in color Doppler ultrasound.

We evaluated the value of combining noncontrast helical computerized tomography (NCHCT) and color Doppler ultrasound in the assessment of the composition of urinary stones. In vitro, we studied 120 stones of known composition, that separate into the five main types: 18 calcium oxalate monohydrate (COM) stones, 41 calcium oxalate dihydrate (COD) stones, 24 uric acid stones, 25 calcium phosphate stones and 12 cystine calculi. Stones were characterized in terms of their Hounsfield density (HU) in NCHCT and the presence of a twinkling artifact (TA) in color Doppler ultrasound.

[Male stress urinary incontinence: medium-term results of treatment by sub-urethral bone anchored sling InVance™].

Objective: To analyze the functional and urodynamic results of a compressive sub-urethral sling with bone anchoring InVance™.

Methods: One hundred and six successive patients were operated with this system between August 2004 and March 2009. Urinary incontinence was classified according to the number of daily protections.

[Radiotherapy influence, about results of the InVance(®) male sling in men with stress urinary incontinence].

Aims: To study impact of previous radiotherapy on urodynamic parameters, continence and complication rate, after prosthetic implantation with InVance® device.

Patients And Methods: We included 106 patients between August 2004 and March 2009. We stratified urinary incontinence according to pads daily used, in grade I (one to two pads), II (three to four), or III (more than four or condom catheter use).

[Prospective monocentric evaluation of bladder tumor targeting by Hexvix® fluorescence: preliminary results].

Purpose: Prospective evaluation of bladder tumor targeting by Hexvix(®) fluorescence.

Patient And Methods: From September 2008 to September 2009, 28 patients have been evaluated using Hexvix(®) technique (blue light) for typically papillary bladder tumor or suspected bladder tumor. Clinical and pathological data have been collected and patients have been classified using EORTC score.

[Pheochromocytoma and cardiogenic failure: an indication for emergency adrenalectomy].

Objective: To identify cardiogenic failure or cardiogenic shock associated with pheochromocytoma diagnosis and emergency adrenalectomy. Update this unusual presentation of pheochromocytoma.

Methods: Between 1998 and 2009, 119 adrenalectomies were performed in our department, among which 19 cases for pheochromocytoma.

[Demography of residents in urology in France: appraisal and perspectives].

Purpose: The objective was to identify the number of residents registered in the course of urology in France in 2008, and to make a forecast in the number of posts of fellow and specialist assistant available at the end of their course.

Material: From January to February 2008, a questionnaire identified in all French University Hospital the number of residents enrolled in the urology course, and the number of posts of fellow and specialist assistant in urology in the region. The year of the end of the course has been determined for each resident in compliance with seniority, and taking into account the availability.

Positive surgical margin appears to have negligible impact on survival of renal cell carcinomas treated by nephron-sparing surgery.

Background: The occurrence of positive surgical margins (PSMs) after partial nephrectomy (PN) is rare, and little is known about their natural history.

Objective: To identify predictive factors of cancer recurrence and related death in patients having a PSM following PN.

Design, Setting, And Participants: Some 111 patients with a PSM were identified from a multicentre retrospective survey and were compared with 664 negative surgical margin (NSM) patients.

[Value of nitrous oxide-oxygen mixture (Entonox) in transrectal prostate biopsies].

Objective: The objective of this study was to evaluate the analgesic and anxiolytic properties of an equimolar nitrous oxide-oxygen mixture (Entonox) for transrectal prostate biopsies compared with the use of intrarectal lidocaine gel. The authors evaluated the pain experienced by patients during the procedure and the correlation between pain and anxiety.

Material And Methods: One hundred and two patients were included in the study and were divided into two groups.

Tubeless percutaneous nephrolithotomy: what about replacing the Double-J stent with a ureteral catheter?

Purpose: To evaluate the feasibility and safety of replacing the Double-J stent with a ureteral catheter in tubeless percutaneous nephrolithotomy (PCNL).

Materials And Methods: From August 1998 to February 2007, 33 patients underwent tubeless PCNL for renal calculi by the same surgeon. A retrograde 7F ureteral catheter was placed at the beginning of the surgery in all patients.

["Tubeless" percutaneous nephrolithotomy: a series of 37 cases].

Objective: To assess the value and feasibility of "tubeless" percutaneous nephrolithotomy (without postoperative nephrostomy tube).

Material And Method: Prospective study of 37 consecutive patients operated by "tubeless" percutaneous nephrolithotomy (PCNL) between 1998 and 2007 for renal stones. Inclusion criteria for this technique were: a single puncture tract, a procedure lasting less than 2 hours, <3 stones with a diameter <25 mm, complete extraction of all stones and no significant bleeding in the renal cavities at the end of the operation.

[Management of ureteral injuries].

Ureteral injury is a rare but potential serious complication that can occur during a variety of general surgical procedures. Knowledge of the course of the ureter is the first step toward preventing ureteral injuries. While some injuries are noticed intraoperatively, most are missed and present later with pain, sepsis, urinary drainage or renal loss.

[Angiomyolipoma with epithelioid contingent mimicking renal cell carcinoma].

The authors report the case of a patient followed for renal angiomyolipoma. On CT surveillance, this lesion developed features of a malignant tumour with loss of the fatty component and the patient was treated by nephrectomy. Histological examination demonstrated renal angiomyolipoma with an epithelioid contingent.

[Laparoscopic adrenalectomy for large tumors].

Aim Of The Study: To analyze indications and results of laparoscopic adrenalectomy for large tumors (> 6 cm).

Methods: It is a retrospective study including patients between January 1994 and December 2003 operated on for large adrenal lesions > or =6 cm. The size was given by the pathologist.