Search PubMed⌕ Search

Biomedical subjects

Dominique Chopin

Publications and source records attributed to Dominique Chopin.

At least 37 records · Page 2Linked to original sources

Laparoscopic and robotic surgical training in urology.

The most important change in urology during the past decade was the development of minimally invasive surgery, particularly laparoscopy. However, the main drawback of laparoscopy is a steep learning curve, which results from the significant changes in the surgical environment. Although laparoscopy can provide important advantages for the patient, including decreased length of hospitalization, decreased analgesic requirement, and a shortened postoperative convalescence, one concern has been whether laparoscopic techniques should be learned solely in the operating room. For example, sports, music, and aviation are practiced before an actual performance is ever undertaken. In this review, the advantages and limitations of all available training modalities in minimally invasive surgery are described. Testing basic laparoscopic skills on inanimate models, becoming familiar with the principles of dissection and hemostasis on living animals, and studying surgical anatomy on cadavers should be considered as indispensable and complementary elements for laparoscopic training in the future. In addition, telementoring with the help of modern image processing and virtual reality eventually may become the basis of tomorrow's surgical instruction.

Clinical Competence↗

Combined reporting of cancer control and functional results of radical prostatectomy.

INTRODUCTION: The results of radical prostatectomy (cancer control, continence and sexual potency) are currently presented separately, while the success of this surgery depends on a combination of good cancer control with maintenance of continence and erections. We propose a score to jointly evaluate and report cancer control and functional results. METHODS: The results of 205 radical prostatectomies were studied at one year. Cancer control was evaluated by PSA. Continence and sexual potency were evaluated by a self-administered questionnaire. Each patient was attributed 0 or 4 points according to the presence of absence of biochemical progression (PSA>0.2 ng/ml), 0 or 2 points according to the presence or absence of urinary incontinence (use of pads) and 0 or 1 point according to the presence or absence of impotence (no erections). The sum of these points provided a score classifying the patient into 8 distinct categories, from 0 to 7, each corresponding to a specific status (from 0 (0+0+0): no cancer control-incontinence-impotence to 7 (4+2+1): cancer control-continence-sexual potency). RESULTS: One year after the operation, 175 (85%) of patients had a PSA less than 0.2 ng/ml, 135 (65.8%) were continent and 64 (32.7%) reported erections. All patients with a score > or =4 had good cancer control, with no functional disorders for a score of 7 (4+2+1) (20%), no disorders of continence for a score of 6 (4+2+0) (31.5%), no disorders of erection for a score of 5 (4+0+1) (8.3%), or with incontinence and impotence for a score of 4 (4+0+0) (21.9%). All patients with a score <4 had a PSA>0.2 ng/ml, but with no functional disorders for a score of 3 (0+2+1) (2.4%), no incontinence for a score of 2 (0+2+0) (8.3%), and no impotence for a score of 1 (0+0+1) (1.9%). 1.9% of patients were incontinent, impotent and showed signs of biochemical progression (score 0=0+0+0). CONCLUSION: This score allows analysis of the global (cancer control and functional) results of radical prostatectomy and would facilitate comparisons between various surgical techniques (type of approach, nerve-sparing techniques) and various centres.

Aged↗

Human urinary bladder transitional cell carcinomas acquire the functional Fas ligand during tumor progression.

The interaction between FasL on tumor cells and Fas on lymphocytes may represent a tumor immune escape mechanism. We explored FasL expression and function in human urinary bladder transitional cell carcinomas (TCCs). FasL expression was observed in situ in 45% of TCCs (n = 45) and was absent in normal urothelium (n = 20). A correlation existed between FasL expression and high tumor grade (0% in G1, 14% in G2, and 75% in G3; P < 0.0001) and stage (13% in superficial Ta-T1 versus 81% in invasive T2-T4; P < 0.0001). FasL function was shown by the ability of two FasL-positive primary culture TCC cell lines (established from two FasL-positive invasive TCCs) to induce Fas-mediated killing not only of conventional Fas-sensitive targets (such as Jurkat cells or phytohemagglutinin-lymphoblasts), but also of autologous T lymphocytes generated in a mixed lymphocyte tumor-cell culture. In addition, an association between FasL expression by TCC cells and activated caspase-8, -9, and -3 expression by interferon-gamma-producing CD8-positive tumor-infiltrating lymphocytes was observed in situ. Our results show a functional expression of TCC-expressed FasL that correlates with tumor progression. These results suggest that TCC-expressed FasL may induce apoptosis of anti-tumor T lymphocytes in vivo, providing new insights on the mechanisms involved in bladder TCC progression.

Antigens, CD↗

Location of positive surgical margins after retropubic, perineal, and laparoscopic radical prostatectomy for organ-confined prostate cancer.

OBJECTIVES: To evaluate and compare the location of positive surgical margins after retropubic, perineal, and laparoscopic radical prostatectomy for organ-confined prostate cancer (pT2). METHODS: From 1988 to 2001, 538 patients underwent radical prostatectomy for clinically localized prostate cancer. Patient age at surgery, clinical stage, preoperative prostate-specific antigen, and Gleason score of positive biopsies were noted. Postoperatively, specimen weight, final Gleason score, and capsular, seminal vesicle, and lymph node status, as well as tumor volume, were studied. The incidence and location of positive margins and the pathologic stage were noted according to the surgical approach. RESULTS: A total of 371 patients (69.5%) had organ-confined tumors. Of the 371 patients, 116 underwent the retropubic, 86 the perineal, and 169 the laparoscopic approach, and positive surgical margins were noted in 22 (18.9%), 12 (13.9%), and 32 (18.9%) patients, respectively. Positive surgical margins were reported in 72 specimen locations, 32 (44.4%) at the apex, 17 (23.6%) at the bladder neck, and 29 (31.9%) posterolaterally. The distribution for the retropubic, perineal, and laparoscopic approaches was apex in 50%, 33.3%, and 44.4%, bladder neck in 29.1%, 41.7%, and 13.9%, and posterolaterally in 20.8%, 25%, and 41.6%, respectively. CONCLUSIONS: In our series, each approach had a specific high-risk location of positive margins: the apex for the retropubic, the bladder neck for the perineal, and posterolaterally for the laparoscopic approach. Improvements in the surgical techniques should take these specific locations under consideration to decrease the incidence of positive surgical margins.

Adenocarcinoma↗

Prospective evaluation of a 21-sample needle biopsy procedure designed to improve the prostate cancer detection rate.

OBJECTIVES: To evaluate prospectively the diagnostic yield of a 21-sample ultrasound-guided needle biopsy procedure for prostate cancer in patients with elevated serum prostate-specific antigen and/or abnormal digital rectal examination findings. METHODS: Between December 2000 and May 2002, 303 patients underwent 21-sample needle biopsy under local anesthesia, comprising sextant biopsies at a 45 degrees angle, 3 biopsies in each peripheral zone at an 80 degrees angle, 3 biopsies in each transition zone (TZ), and 3 biopsies in the midline peripheral zone. Morbidity was assessed clinically. A short questionnaire was filled out by 90 consecutive patients. RESULTS: The cancer detection rate using 6 biopsy samples (sextant biopsies only), 12 samples (sextant plus lateral biopsies), 18 samples (sextant plus lateral plus TZ biopsies), and 21 samples (sextant plus lateral plus TZ, plus midline biopsies) was 22.7%, 28.3%, 30.7%, and 31.3%, respectively. The 21-sample procedure statistically improved the cancer detection rate by 37.9% relative to the 6-sample procedure. The improvement was most marked in patients with a prostate volume of more than 40 cm(3) (48.3%), patients with Stage T1c prostate disease (44.9%), patients undergoing repeat biopsy (66.2%), and patients with prostate-specific antigen levels greater than 10 ng/mL (38.5%). Adverse effects were infrequent (3%), consisting of prostatitis in 3 patients, acute urinary retention in 6 patients, and rectal bleeding requiring hospitalization in 1 patient taking aspirin. Using the questionnaire, 84% of patients reported macroscopic hematuria for an average of 3.4 days and hematospermia for 12.8 days, and 45% reported minor rectal bleeding lasting 1.1 days. The mean pain score, with a visual analog scale ranging between 0 (no pain) and 10 (intense pain), was 4.56. CONCLUSIONS: A 21-sample needle biopsy procedure increased the prostate cancer detection rate relative to a 6-sample procedure, without increasing morbidity. Patients with elevated prostate-specific antigen values should undergo sextant biopsies and at least 6 additional biopsies in the peripheral zone and 6 in the TZ.

Aged↗

Radical retropubic versus laparoscopic prostatectomy: a prospective comparison of functional outcome.

OBJECTIVES: To evaluate and compare prospectively the functional results (urinary continence and erectile function) after retropubic and laparoscopic radical prostatectomy. METHODS: From 1998 to 2001, 300 patients underwent radical prostatectomy, 70 by the retropubic and 230 by the laparoscopic approach. All of them completed a confidential, self-administered questionnaire regarding urinary continence and erectile function before and 1, 3, 6, and 12 months after surgery. The results were analyzed separately for day and nighttime urinary continence and by neurovascular bundle status and age for erectile function. RESULTS: No differences were found between the two groups except for the duration of bladder catheterization (7.8 days for the retropubic and 5.8 for the laparoscopic approach, P = 0.0006). Before surgery, 296 patients (98.7%) were continent and 290 (96.6%) were potent. One year after surgery, diurnal urinary continence increased progressively to 66.7% and 71.6% (P >0.05), nocturnal continence to 66.7% and 87.1% (P = 0.008), and potency rates to 30% and 41% (P >0.05) for the retropubic and the laparoscopic approaches, respectively. After preservation of one and two neurovascular bundles, the potency rate increased to 27% and 46% and 44% and 53% for the retropubic and laparoscopic approaches, respectively (P >0.05). For patients younger than 60 years old with bilateral neurovascular bundle preservation, the potency rates were 72% and 81% (P >0.05). CONCLUSIONS: The two approaches showed similar outcomes regarding continence and erectile function 1 year after surgery. However, the recovery of nocturnal continence seemed to occur earlier after the laparoscopic approach. It is necessary to conduct additional studies to determine the potential benefits of the laparoscopic approach regarding nocturnal continence.

Aged↗

Introducing a prognostic score for pretherapeutic assessment of seminal vesicle invasion in patients with clinically localized prostate cancer.

PURPOSE: To identify prostate cancer patients who will have the most likely benefit from sparing the seminal vesicles during 3D conformal radiation therapy. METHODS AND MATERIALS: From 1988 to 2001, 532 patients underwent radical prostatectomy for clinically localized prostate cancer. Primary endpoint was the pathological evidence of seminal vesicle invasion. Variables for univariate and multivariate analyses were age, prostate weight, clinical stage, PSA level, Gleason score, number and site of positive prostate sextant biopsies. Multivariate logistic regression with backward stepwise variable selection was used to identify a set of independent predictors of seminal vesicle invasion, and the variable selection procedure was validated by non-parametric bootstrap. RESULTS: Seminal vesicle invasion was reported in 14% of the cases. In univariate analysis, all variables except age and prostate weight were predictors of seminal vesicle invasion. In multivariate analysis, only the number of positive biopsies (P<0.0001), Gleason score (P<0.007) and PSA (P<0.0001) were predictors for seminal vesicles invasion. Based on the multivariate model, we were able to develop a prognostic score for seminal vesicle invasion, which allowed us to discriminate two patient groups: A group with low risk of seminal vesicles invasion (5.7%), and the second with a higher risk of seminal vesicles invasion (32.7%). CONCLUSIONS: Using the number of positive biopsies, Gleason score and PSA, it is possible to identify patients with low risk of seminal vesicles invasion. In this population, seminal vesicles might be excluded as a target volume in radiation therapy of prostate cancer.

Aged↗

Prognostic significance of tumor volume after radical prostatectomy: a multivariate analysis of pathological prognostic factors.

OBJECTIVES: To analyze the association between Gleason score, stage and status of surgical margins with tumor volume in prostate cancer progression after radical prostatectomy. METHODS: 200 consecutive radical prostatectomy specimens were analyzed. Preoperative clinical stage, PSA, results of prostate biopsies as well as pathological results were noted. A biochemical recurrence was defined as a single, postoperative detectable PSA level (>0.2 ng/ml). Tumor volume was compared to postoperative staging, Gleason score, and surgical margin status to predict tumor progression. Univariate and multivariate analysis using stepwise logistic regression were used to identify parameters with additional prognostic value. RESULTS: Pathological results of the prostatectomy specimens showed 149 (74.5%) pT2a-b, 29 (14.5%) pT3a and 22 (11%) pT3b tumors. Tumor volume was 0.57 cc for pT2a, 1.2cc for pT2b, 1.7cc for pT3a and 2.9cc for pT3b, respectively (p<0.05). Taken together, mean volume for pT2 and pT3 were 1.06 and 2.2 cc, respectively (p<0.0001). Five-year progression-free actuarial survival was 69.7%. Using univariate analysis, tumor progression correlated with final Gleason score (p<0.0007), positive surgical margins (p=0.02), tumor volume (p=0.009) and stage (p<0.0001). In a multivariate analysis, tumor progression correlated only with the final Gleason score (p=0.04) and stage (p=0.0002). CONCLUSION: Gleason score and pathological stage are independent factors to predict prostate cancer progression after radical prostatectomy. When these parameters are known, tumor volume does not provide additional information.

Aged↗

Introducing a new, simple scoring system to evaluate oncological and functional outcome after radical prostatectomy.

OBJECTIVE: To create a scoring system which takes into account oncological outcome and functional results (continence and erectile function) of patients after radical prostatectomy. MATERIAL AND METHODS: A total of 146 consecutive men underwent radical prostatectomy for localized prostate cancer and were evaluated 1 year after surgery. Biochemical recurrence was defined as a single postoperative prostate-specific antigen (PSA) level of > 0.2 ng/ml. Continence, defined as not using a pad, and potency, defined as the ability to achieve and maintain an erection suitable for sexual intercourse, were evaluated by means of a prospective, self-administered questionnaire. Each patient received 4 points (if PSA was <0.2 ng/ml) or 0 points (if PSA was >0.2 ng/ml) for oncological outcome, 2 points (if continent) or 0 points (if incontinent) for urinary continence and 1 point (if potent) or 0 points (if impotent) for erectile function. The total score was calculated, with higher scores indicating a better outcome. The unique feature of this scoring system is that each individual score represents a particular clinical status regarding oncological and functional outcome. RESULTS: One year after surgery, 121 (82.8%) patients had PSA levels of <0.2 ng/ml, 103 (70.5%) were continent and 53 (36.3%) were potent. Patients with a total score of > or =4 points had good cancer control and could be further subdivided into those who were continent and potent (7 points; 22.6%), those who were continent but had erectile dysfunction (ED) (6 points; 34.2%), those who were incontinent and potent (5 points; 8.2%) and those who were incontinent and had ED (4 points; 17.8%). Similarly, patients with a score of <4 points had no cancer control and could be further subdivided into those who were continent and potent (3 points; 3.4%), those who were continent but had ED (2 points; 10.3%), those who were incontinent and potent (1 point; 2.1%) and those who were incontinent and had ED (0 points; 1.3%). CONCLUSIONS: This scoring system includes the three most important outcomes after radical prostatectomy, namely cancer control, continence and erectile function. It may allow us to better evaluate, communicate and compare the results of radical prostatectomy in a multinational, multicenter setting.

Aged↗

Immunocyt test improves the diagnostic accuracy of urinary cytology: results of a French multicenter study.

PURPOSE: The limitations of urinary cytology and the invasiveness of cystoscopy generate an increasing interest in noninvasive diagnostic tools for the management of transitional cell carcinoma. We assess the clinical performance of ImmunoCyt (DiagnoCure, Inc., Saint-Foy, Canada) in the detection of bladder cancer in a 10-center French trial. MATERIALS AND METHODS: From October 2000 to April 2001, 694 patients undergoing cystoscopy were prospectively included in the study. Of the patients 458 (66%) had been previously treated for superficial transitional cell carcinoma and 236 (34%) were referred for symptoms suggestive of bladder cancer. All patients underwent ImmunoCyt test and standard urinary cytology from voided urine as well as a complete evaluation including cystoscopy and transurethral resection or biopsy of suspicious lesions. Sensitivity and specificity values of urinary cytology and ImmunoCyt whether or not combined were calculated using cystoscopy as the gold standard and histopathology when available. RESULTS: A total of 85 recurrent and 58 newly diagnosed bladder tumors were diagnosed by cystoscopy and histologicaly confirmed. Overall sensitivity of urinary cytology was 17.9%, 46.3% and 63.8% respectively, for G1, G2 and G3 transitional cell carcinoma, whereas that of ImmunoCyt was 60.7%, 75.6% and 76.8%. Sensitivity of the combined tests was 66.7%, 78% and 87%, respectively. Moreover, 10 of 55 (18.2%) new pT1 and pT2 or greater tumors were diagnosed by ImmunoCyt alone. Specificity of urinary cytology was 94.5%, whereas that of ImmunoCyt was 84.2%. Specificity of the combined tests was 80.7%. Marked variations in urinary cytology sensitivity were observed among the different centers (27.3% to 66.7%), whereas combined assays (urinary cytology and ImmunoCyt) enhanced the overall sensitivity in the 80% range at most centers. CONCLUSIONS: This prospective multicenter series confirmed a marked increase in sensitivity without significant loss in specificity when including ImmunoCyt in standard urinary cytology protocol. This increased sensitivity was observed in high grade lesions (with 100% sensitivity for carcinoma in situ) as well in low grade, low stage tumors.

Adult↗

Prognostic consequences of the location of positive surgical margins in organ-confined prostate cancer.

INTRODUCTION: The purpose of the present study was to evaluate and compare the risk of progression in organ-confined prostate cancers (stage pT2), according to the location of positive surgical margins. MATERIALS AND METHODS: Between 1988 and 2001, 538 consecutive men underwent radical prostatectomy for localized prostate cancer. All patients had preoperative physical examinations, serum PSA assays (Hybritech assay, N.l. <4 ng/ml) and ultrasound-guided sextant biopsies to confirm diagnosis. Radical prostatectomy specimens were analyzed according to the Stanford protocol. Positive margins were classified as single or multiple and main locations (apex, bladder neck and posterolateral) were noted. Postoperative follow-up data were obtained through routine serum PSA assays. Biochemical recurrence was defined as a single postoperative PSA level >0.2 ng/ml. Biochemical progression was studied in patients with organ-confined tumors (stage pT2) according to the location of the single positive margin. Kaplan-Meier analysis was performed to determine the actuarial biochemical recurrence-free likelihood and the log-rank test was used for statistical analysis. Differences were considered significant when the p value was <0.05. RESULTS: 371 patients had organ-confined tumors, and 60 patients (16.1%) had solitary positive margins (apex 26, bladder neck 14, posterolaterally 20). Eleven patients (18.3%) had biochemical progression. 5-year biochemical free progression was 54.5, 76.9 and 87.9% for apex, bladder and the posterolateral location, respectively (p < 0.05). CONCLUSIONS: In the present study, a positive surgical margin at the apex was associated with worse clinical prognosis compared to the bladder neck and posterolateral locations.

Humans↗

Beta-catenin-related anomalies in apoptosis-resistant and hormone-refractory prostate cancer cells.

PURPOSE: beta-Catenin is a critical end component of the wnt signaling pathway that regulates cell growth, apoptosis, and migratory behavior in response to intercellular adhesion molecules. The aim of this study was to evaluate abnormalities of beta-catenin protein expression, subcellular localization, and activity in an in vitro model of acquired apoptosis-resistance in cultured PC cells and in primary human prostate cancers (PrCa). EXPERIMENTAL DESIGN: Apoptosis-resistant human prostate cancer cell line variants were derived from parental LNCaP cells by repeated brief exposure to apoptotic stimuli. The derivative and parental cells were analyzed for beta-catenin expression and intracellular localization using cell fractionation and Western blotting procedures. Endogenous transcriptional activity from the TCF/LEF-1 response element was also studied in these variants after transfection with a beta-catenin sensitive reporter plasmid. Finally, beta-catenin protein expression and intracellular localization were evaluated on 212 patients [122 localized PrCa and 90 hormone-refractory (HRPC) PrCa specimens by immunohistochemistry]. RESULTS: Western blot analysis showed that the intracellular partitioning of beta-catenin was shifted from the membrane fraction in parental cells to the cytoplasmic/nuclear fractions of the apoptosis-resistant cell lines. Coordinately, transcriptional activity from a TCF/LEF-promoted reporter plasmid was increased significantly in the apoptosis-resistant lines. In the primary prostate tumors analyzed, cytoplasmic and/or nuclear beta-catenin expression was correlated statistically with the HRPC status and Gleason score. In the group of localized PrCa, abnormal beta-catenin expression tended to be associated with a higher Gleason score and with pT3 disease. No mutation was found in patients with HRPC and abnormal beta-catenin expression. CONCLUSION: These data suggest that anomalies of beta-catenin expression occur in PrCa and that these anomalies are associated with disease progression, especially to the therapeutic-resistant state.

Adult↗

[Prognostic value of the localization of positive resection margins after radical prostatectomy for intraprostatic tumors].

OBJECTIVE: To evaluate the risk of biochemical recurrence of organ-confined prostate cancer (pT2+) after radical prostatectomy, according to the site of positive resection margins. MATERIAL AND METHODS: 649 radical prostatectomies were performed between 1988 and 2002 for organ-confined tumours in 436 cases (stage pT2). Preoperative (clinical stage, PSA assay and Gleason score on biopsies) and post-operative data (weight of the resection specimen, Gleason score and tumour volume) were recorded as a function of the site of positive resection margins. Biochemical recurrence was defined by a PSA level greater than 0.2 ng/ml. Biochemical progression-free survival was studied according to the Kaplan-Meier method, as a function of the site of positive resection margins. RESULTS: Sixty-six patients (15.1%) had a single positive margin. With a mean follow-up of 52.9 months (range: 1.1 to 160.4 months), eleven patients (16.6%) developed biochemical recurrence. The mean progression-free survival was 7.8 months. An apical positive resection margin was associated with the most unfavourable prognosis compared to other sites. CONCLUSION: Apical positive resection margins appear to be associated with a poorer prognosis than other sites. This study confirms that dissection of the apex is essential to ensure optimal tumour control and prognosis in organ-confined prostate cancer.

Humans↗

[Simple nephrectomy with retroperitoneal laparoscopy].

OBJECTIVE: Nephrectomy was one of the very first urological procedures to be performed by laparoscopy. The objective of this study was to evaluate the results of retroperitoneal laparoscopic simple nephrectomy. METHODS: From 1995 to 2002, 88 retroperitoneal laparoscopic simple nephrectomies were performed in 87 patients with a mean age of 45.3 years (range: 18 to 77 years). The intraoperative and postoperative complications, conversion rate, blood loss, operating time and length of hospital stay were studied for each patient. RESULTS: The mean operating time was 114 min (range: 35 to 280 min), mean blood loss was 97.6 ml (range: 0 to 300 ml), there were 3 conversions (3.4%) and the mean length of hospital stay was 4.7 days (range: 2 to 13 days). The main postoperative complications were 2 cases of haematoma and one abscess of the nephrectomy site requiring surgical revision and 3 intraoperative thromboses of arteriovenous fistulas in 3 patients with polycystic kidney disease. CONCLUSION: Due to its low morbidity, laparoscopic simple nephrectomy has probably become the, reference technique for all indications for nephrectomy for benign disease.

Adolescent↗

[How to present in a unique fashion the oncologic and functional results after radical prostatectomy].

INTRODUCTION: The results of radical prostatectomy (cancer control, continence and sexual potency) are currently presented separately, while the success of this surgery depends on a combination of good cancer control with maintenance of continence and erections. We propose a score to jointly evaluate and report cancer control and functional results. METHODS: The results of 205 radical prostatectomies were studied at one year. Cancer control was evaluated by PSA and continence and sexual potency were evaluated by a self-administered questionnaire. Each patient was attributed 0 or 4 points according to the presence or absence of biochemical progression (PSA > 0.2 ng/ml), 0 or 2 points according to the presence or absence of urinary incontinence (use of pads) and 0 or 1 point according to the presence or absence of impotence (no erections). The sum of these points provided a socre classifying the patient into 8 distinct categories, from 0 to 7, each corresponding to a specific status (from 0 (0 + 0 + 0): no cancer control-incontinence-impotence to 7 (4 + 2 + 1): cancer control-continence-sexual potency). RESULTS: One year after the operation, 175 (85%) of patients had a PSA less than 0.2 ng/ml, 135 (65.8%) were continent and 64 (32.7%) reported erections. All patients with a score > or = 4 had good cancer control, wit no functional disorders for a score of 7 (4 + 2 + 1) (92%), no disorders of continence for a score of 6 (4 + 2 + 1) (31.5%), no disorders of erection for a score of 5 (4 + 0 + 1) (8.3%), or with incontinence and impotence for a score of 4 (4 + 0 + 0) (21.9%). All patients with a score < 4 had a PSA > 0.2 ng/ml, but with no functional disorders for a score for 3 (0 + 2 + 1) (2.4%), no incontinence for a score of 2 (0 + 2 + 0) (8.3%), and no impotence for a score of 1 (0 + 0 + 1) (1.9%). 1.9% of patients were incontinent, impotent and showed signs of biochemical progression (socre 0 = 0 + 0 + 0). CONCLUSION: This score allows analysis of the global (cancer control and functional) results of radical prostatectomy and would facilitate comparisons between various surgical techniques (type of approach, nerve-sparing techniques) and various centres.

Aged↗

Long-term results of a prospective randomized study comparing two immunosuppressive regimens, one with and one without CsA, in low-risk renal transplant recipients.

Due to the nephrotoxicity of cyclosporin A (CsA), its benefit on long-term graft survival remains controversial, especially in low-risk patients. Here we report the 12-year results of a calcineurin-inhibitor-free regimen. One hundred and seventeen low-risk kidney recipients were prospectively randomized to maintenance therapy with either a combination of azathioprine and prednisone (group NoCsA, n=58), or with cyclosporine, azathioprine, and prednisone (group CsA, n=59). Both groups received induction therapy with anti-lymphocyte globulins (ALG). Twelve-year patient survival was 75% and 82.5% in the CsA and NoCsA groups, respectively [ P= not significant (NS)]. Twelve-year graft survival was 59% and 56% ( P=NS) in the CsA and NoCsA groups, respectively (NS). Transplant rejection rates were similar in both groups. Mean serum creatinine levels after 10 years were 161 and 136 micromol/l in the CsA and NoCsA groups, respectively. Rejection-free patients of the CsA group had poorer renal function (168 micromol/l) than those of the NoCsA group (121 micromol/l; P=0.0060). We concluded that a 12-year graft survival of 56% and a graft half-life of 15 years can be achieved without the primary use of a calcineurin inhibitor in low-risk patients receiving ALG. Patients treated with CsA had poorer graft function at 12 years.

Adult↗

Long-term kidney graft survival across a positive historic but negative current sensitized cross-match.

BACKGROUND: The sensitive cross-match (XM) techniques that have been introduced for clinical transplantation can detect anti-donor immune reactivity despite a negative standard National Institute of Health (NIH) cross-match. One of them uses anti-kappa human light chain globulins (AHG). But there is some discussion about the clinical consequences of a positive AHG-XM in the historical sera that became negative in the sera collected just before the transplantation (pretransplant sera). This study was intended to assess the risk of kidney graft failure associated with a positive historic but negative pretransplant AHG-XM in allosensitized patients having a negative historic NIH-XM. METHODS: This retrospective study includes 90 consecutive renal transplants in immunized patients performed at one center between 1985 and 1991. All of the patients had negative historical and pretransplant standard NIH lymphocytotoxic cross-matches and received the same immunosuppressive regimen. The AHG-XMs were done retrospectively using peak historic and sera collected on the day of the transplantation. RESULTS: The AHG cross-match (AHG-XM) was positive in 17 patients, although the standard NIH cross-match was negative. Fourteen of them had a positive historical but negative pretransplant AHG-XM. The actuarial graft survival in this group of 14 patients was 100% at 1 year and 78% at 9 years compared with 90 and 67%, respectively, in patients with negative historical AHG-XM. In addition, the number of rejection episodes per patient as well as renal function at 1, 2, and 5 years were similar in the two groups. IgG anti-donor HLA class I accounted for the XM positivity in 12 of the 14 patients; most rapidly lost all antibody reactivity by NIH technique in an average time of 8 months before the transplantation. In conclusion, this study suggests that transplant patients having a negative historic NIH-XM but a positive historic AHG-XM may not be at high risk of graft failure especially if there is a well-documented sera history showing a marked decrease in PRA level before transplantation and a negative pretransplant AHG-XM.

Adult↗

Laparoscopic radical prostatectomy.

Laparoscopy has become an integral part of urologic surgery. Its indications have been progressively extended to the most advanced oncologic and reconstructive procedures. Within this frame, radical prostatectomy is of major interest, especially considering the incidence and clinical significance of prostate cancer. The procedure comprises several steps of challenging dissection in which the preservation of delicate nerve and muscular structures should be conciliated with safe tumor excision. The intervention ends with vesicourethral anastomosis, which is considered the most difficult reconstructive procedure in urologic laparoscopy. Laparoscopic radical prostatectomy has gradually become a wholly standardized procedure, and it is now routinely performed in several centers throughout the world.

Humans↗