Characteristics of recurrent acute urinary retention in BPH patients in the United States: Retrospective analysis of US-based insurance claims database.

PURPOSE: The objective of this study is to analyze characteristics of recurrent acute urinary retention (AUR) in patients with benign prostatic hyperplasia (BPH), utilizing a population based data set. Also, we sought to report on how AUR was treated, specifically regarding the need and length of catheterization and types of procedures utilized for mitigation. MATERIALS & METHODS: A retrospective observational cohort study was performed using Optum's deidentified Clinformatics® Data Mart Database. We compared two groups, BPH patients with AUR (n = 180,737) and BPH patients without AUR (n = 1,139,760) from January 1, 2003 to December 31, 2017. Also, we analyzed the factors affecting the development of multiple episodes of AUR through age-adjusted multivariate analysis. RESULTS: In contrast to the 47.7% of patients who had a single AUR episode, 33.5% of AUR patients developed 3 or more subsequent episodes of retention. For age matched patients, the risks of additional episodes of retention increase significantly with older age, Caucasian race, diabetes, neurologic conditions, or low income. Overall, the rate of BPH surgery in AUR patients over the study period decreased and the most common procedure was transurethral resection of the prostate. CONCLUSIONS: Risk factors for multiple episodes of AUR included age (60 and older), Caucasian race, lower income socioeconomic status, diabetes, and neurological disorders. Patients with a high probability of developing recurrent episodes of AUR are recommended to receive preemptive BPH medication before such AUR occurrences. Also, more expeditious surgical treatment should be considered rather than temporary catheterization when AUR occurs.

Correlation between 5-α reductase type 2 protein expression and methylation of 5-α reductase type 2 promotor gene of benign prostatic hyperplasia.

PURPOSE: The enzyme 5-α reductase type 2 (5-AR 2) plays a key role in the development and maintenance of the prostate gland. We evaluated the level 5-AR 2 protein expression and the relationship between methylation of the 5-AR 2 gene-promoter and 5-AR 2 protein expression of benign prostatic hyperplasia (BPH). MATERIALS AND METHODS: A total of 37 prostate samples were evaluated. These included 22 samples from men undergoing transurethral prostate resections and 15 non-cancerous transition-zone human prostate tissue samples taken following radical prostatectomy. We quantified 5-AR 2 protein expression and gene-promoter methylation status using common assay procedures. Clinical variables included age, body mass index (BMI), prostate-specific antigen (PSA) levels, lipid profiles, and prostate volumes. Univariate and multivariate statistical analyses were performed followed by stepwise logistic regression modeling. RESULTS: We were able to extract DNA from 36 of the 37 tissue samples and 10 of these (28%) did not express the 5-AR 2 protein. In total, 26 patients (72%) had methylated 5-AR 2 promoter-regions. There was a strong correlation between methylation of the 5-AR 2 promoter-regions and low-absent 5-AR 2 protein expression (p = 0.0003). Increasing age significantly predicted methylation status and protein expression level (p = 0.013). CONCLUSIONS: The level of 5-AR 2 protein expression varies among prostate tissue samples. Methylation of the 5-AR 2 gene-promoter may account for low or absent expression of 5-AR 2 in adult human prostate tissues. Increased age correlates with increased 5-AR 2 gene-promoter methylation and decreased protein expression in men with BPH.

Longitudinal changes in erectile function after thulium:YAG prostatectomy for the treatment of benign prostatic obstruction: a 1-year follow-up study.

This study aimed to evaluate the impact of thulium:yttrium-aluminum-garnet (Tm:YAG) (RevoLix®) laser prostatectomy for the treatment of benign prostatic obstructions on erectile function (EF). A total of 208 patients who underwent Tm:YAG laser prostatectomies participated in this study. All cases were evaluated preoperatively and at 3, 6, and 12 months postoperatively using the International Prostate Symptom Score (IPSS), quality of life (QoL) score, and the International Index of Erectile Function (IIEF-5) questionnaires. Patients were divided into groups A (severe erectile dysfunction [ED]), B (moderate ED), and C (mild-to-normal ED), according to their IIEF-5 scores. The median patient ages were 69, 65, and 62 years in groups A, B, and C, respectively. Significant improvements occurred in the IPSS and QoL score within the groups during the 12-month follow-up period. The IIEF-5 scores at 3 months postoperatively were lower than the preoperative scores in groups B and C. The IIEF-5 scores subsequently improved during the 12-month follow-up period. The slope of the relationship between the IIEF-5 score and the time since Tm:YAG laser prostatectomy had a ß value of 0.2210 (95% confidence interval 0.103 to 0.338, p = 0.0003); hence, each postoperative month was associated with an increase of 0.2210 in the IIEF-5 score. The IIEF-5 scores gradually increased and reached the preoperative levels by the 12-month follow-up assessment. Although the IIEF-5 score dropped significantly during the first 3 months postoperatively, it improved over the following 12 months. Tm:YAG laser prostatectomy did not impact on EF ultimately.

Transutricular seminal vesiculoscopy in the management of symptomatic midline cyst of the prostate.

PURPOSE: To evaluate the utility of transutricular seminal vesiculoscopy as a diagnostic and therapeutic option for symptomatic midline cyst of the prostate in patients with hematospermia and symptoms associated with prostatitis. MATERIALS AND METHODS: From January 2005 to July 2013, 61 patients with symptomatic (hematospermia, pain on ejaculation, scrotal discomfort) midline cyst of the prostate, who did not improve with medication within a 4-week period, were included. Diagnosis of a midline cyst of the prostate was based on an anechoic round or spheroid-shaped lesion in the median, above the level of the verumontanum, extending into the prostatic base on transrectal ultrasonography (TRUS). All patients underwent transutricular seminal vesiculoscopy using a 9.0 Fr rigid ureteroscope and Bugbee electrode. Medical records, the Chronic Prostatitis Symptom Index (NIH-CPSI), and TRUS were used for assessment for more than 3 months after the procedure. RESULTS: Of the 61 patients, 32 (52.4 %) had hematospermia, 20 (32.7 %) had symptoms associated with chronic pelvic pain syndrome, such as perineal pain, scrotal discomfort, and testicular pain, and nine (14.7 %) patients had ejaculatory disturbances, such as painful or uncomfortable ejaculation and anejaculation as major complaints/symptoms. In endoscopic findings, hemorrhage was present in the dilation of the prostatic utricle and in the seminal vesicle in 11 (18.0 %) and 21 (34.4 %) of the patients, respectively. Calculi were found in the dilation of the prostatic utricle and in the seminal vesicle in 12 (19.7 %) and six (9.8 %), respectively. Hematospermia resolved in 29 of 32 (90.6 %) patients after transutricular seminal vesiculoscopy. In 29 patients with chronic pelvic pain syndrome and ejaculatory disturbances, NIH-CPSI scores improved, from 19.0 ± 3.8 to 11.8 ± 3.6 (p < 0.001), after treatment. The pain domain and quality-of-life domain scores of the NIH-CPSI were better postsurgery than presurgery (p < 0.001). Acute epididymitis, as a postoperative complication, was observed in two patients (3.3 %). CONCLUSIONS: There are various endoscopic findings in the dilation of prostatic utricle and seminal vesicle such as hemorrhage, calculi or/and purulent material in the patients with midline cyst of the prostate. The role of transutricular seminal vesiculoscopy in reducing symptoms may be mediated through the effects of endoscopic fenestration, removal of blood clots, calculi, or whitish debris and/or electrocautery of intracystic hemorrhage. This endoscopic technique enables useful diagnostic and therapeutic approaches for symptomatic midline cysts of the prostate.

Effects of the beta-blocker carvedilol on arrhythmia and long-term clinical outcomes in benign prostate hypertrophy patients.

Benign prostatic hypertrophy (BPH) is associated with autonomic dysfunction and sympathetic nervous system mediated by the alpha receptor. However, limited data exist regarding the effects of the beta-blocker (BB) carvedilol on arrhythmia and urologic outcomes in BPH patients. Our database of patients diagnosed with BPH from 2015 to 2020 was used to obtain echocardiography and electrocardiogram data. Inclusion criteria were BPH patients taking BBs. International Prostate Symptom Score questionnaire were used to evaluate the urinary symptoms and quality of life. Among 448 patients with BPH (69.2 ± 10.9 years) taking BBs, 219 patients took carvedilol (48.9%) and 229 patients took a non-carvedilol BB (51.1%; bisoprolol, 184 patients, 80% or nebivolol, 45 patients, 20%). Difference in the baseline characteristics was not observed. During the median 36-month follow-up, a lower incidence of arrhythmic events (P = .029), total urologic events (P < .001), and less use of additive alpha-blocker was observed in the carvedilol group (P = .022). In multivariate analysis, less carvedilol use (P = .019), heart failure (P < .001), stroke (P < .001), and cardiomyopathy (P = .046) were independent risk factors for arrhythmic events. In addition, less carvedilol use (P = .009) and older age (P = .005) were independent risk factors for urologic events based on BB type at the median 36-month follow-up. The use of carvedilol was associated with less arrhythmic events in BPH patients with palpitation and decreased the incidence of urologic events in BPH compared with the use of non-carvedilol BBs in long-term follow-up.

Differentiation of bone metastases from prostate cancer and benign red marrow depositions of the pelvic bone with multiparametric MRI.

PURPOSE: To investigate the diagnostic utilities of imaging parameters derived from T1-weighted imaging (T1WI), diffusion-weighted imaging (DWI) and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) to differentiate bone metastases from prostate cancer and benign red marrow depositions of the pelvic bone. MATERIALS AND METHODS: Thirty-six lesions from 36 patients with prostate cancer were analyzed with T1WI, DWI, and DCE-MRI. The lesions were classified in the bone metastases (n = 22) and benign red marrow depositions (n = 14). Lesion-muscle ratio (LMR), apparent diffusion coefficient (ADC), volume transfer constant (Ktrans), reflux rate (Kep), and volume fraction of the extravascular extracellular matrix (Ve) values were obtained from the lesions. The imaging parameters of the both groups were compared using the Mann-Whitney U test, receiver operating characteristics (ROC) curves were analyzed. For the ROC curves, area under the curves (AUCs) were compared. RESULTS: The ADC, Ktrans, Kep, and Ve values of bone metastases were significantly higher than those of benign red marrow depositions (Mann-Whitney U test, p < 0.05). However, there was no significant difference in LMR between the two groups (Mann-Whitney U test, p = 0.360). The AUCs of Ktrans, Kep, ADC, Ve, and LMR were 0.896, 0.844, 0.812, 0.724, and 0.448, respectively. In the pairwise comparison of ROC curves, the AUCs of Ktrans and Kep was significantly higher than LMR. CONCLUSIONS: Ktrans, Kep, Ve, and ADC values can be used as imaging tools to differentiate bone metastases from prostate cancer and benign red marrow depositions of the pelvic bone.

The efficacy of transureteroureterostomy for ureteral reconstruction during surgery for a non-urologic pelvic malignancy.

OBJECTIVE: Of the many surgical options available for ureteral reconstruction during surgery for non-urologic pelvic malignancies, the efficacy of transureteroureterostomy (TUU) was investigated. METHODS: Ureteral reconstruction was dichotomized as follows: group 1, end-to-end ureteroureterostomy and ureteroneocystostomy (UNC) with or without a psoas hitch; and group 2, TUU. TUU was preferably performed when partial bladder invasion was suspected or patients had undergone prior surgery or radiotherapy. Groups 1 and 2 included 17 and 28 patients, respectively. These patients were consecutively enrolled and analyzed with respect to complications and clinical outcomes. RESULTS: Of the complications that followed TUU, persistent hydronephrosis and a transient urine leak were detected in one patient each. No differences in complication rates were observed between the two groups with respect to hydronephrosis, azotemia, urine leak, and acute pyelonephritis. Patients who had a UNC with a psoas hitch tended to have more frequent voiding dysfunction postoperatively than those who had a TUU. CONCLUSIONS: TUU is a feasible technique for ureteral reconstruction when multivisceral resection, including the ureter, is performed during surgery for non-urologic pelvic malignancies. TUU could be a preferred method in patients requiring partial cystectomy or in those that have undergone prior surgery or radiotherapy.

Docetaxel chemotherapy of Korean patients with hormone- refractory prostate cancer:comparative analysis between 1st-line and 2nd-line docetaxel.

PURPOSE: This study was undertaken to investigate the outcomes associated with docetaxel treatment of Korean patients with hormone-refractory prostate cancer (HRPC) and to compare its clinical efficacies in 1st and 2nd-line settings. PATIENTS AND METHODS: This study was retrospectively performed and included 47 patients with HRPC. The 1st-line group consisted of 19 patients who had not undergone prior chemotherapy, and the 2nd-line group consisted of 28 patients who underwent prior chemotherapy. All patients were treated with 75mg/m2 IV docetaxel every 3 weeks and 5mg of prednisone twice daily with a continuous androgen blockade. RESULTS: Of 47 study subjects, 14 patients (29.8%) had > or = 50% PSA decline from baseline. PSA response was more common in the 1st-line group, but this was not statistically different (42.1% vs. 21.4%, p = 0.114). After a median follow up of 11 months (range, 6-24 months), the 1st-line group showed a longer time to PSA progression (4 vs. 2 months, p = 0.015) and survival (17 vs. 10 months, p = 0.037) than the 2nd-line group. In terms of toxicities, no difference was apparent between the 2 groups. CONCLUSION: In a 1st-line setting, docetaxel is an effective and tolerable agent for Korean HRPC patients, and that its efficacy is limited, although 2nd-line docetaxel is tolerable.

A back-to-back tumor composed of papillary renal cell carcinoma and oncocytoma treated by laparoscopic partial nephrectomy: a case report.

BACKGROUND: Renal oncocytoma is the most common benign renal tumor, and papillary renal cell carcinoma is the second most common histologic subtype of renal cell carcinoma. Renal tumors containing different components such as papillary renal cell carcinoma and oncocytoma are extremely rare. CASE PRESENTATION: A renal mass was incidentally detected in a 52-year-old Korean woman, and a computed tomographic scan showed a 32-mm multicystic mass with some calcifications in the lower pole of the right kidney. She underwent laparoscopic partial nephrectomy without any perioperative complications. We found a papillary renal cell carcinoma and an oncocytoma in a tumor mass. CONCLUSIONS: The possibility of a mixed malignant tumor should be considered while treating benign tumors such as oncocytoma.

Laparoscopic -2port Varicocelectomy with Scarless Periumblical Mini-Incision: Initial Experience in Approach and Outcomes.

PURPOSE: As with other areas, there have been many efforts for minimally invasive surgery in varicocelectomy. We present our initial experience with laparoscopic varicocelectomy with a two-port scarless periumbilical mini-incision. MATERIALS AND METHODS: The study enrolled 18 patients who underwent laparoscopic varicocelectomy with a twoportscarless periumbilical mini-incision from February 2012 to April 2013. The laparoscopic varicocelectomy was performed using two 5-mm ports at periumbilical sites in skin creases. Here, the surgical procedure is introduced and the outcomes of the case series are summarized. We reviewed other laparoscopic techniques and compared them with our technique. RESULTS: The mean patient age was 34.8 years. Of the 18 patients, 15 had grade 3 varicoceles. The mean operatingtime was 62.5 minutes. Postoperatively, the scrotal pain level decreased immediately from a mean VAS score of 6.3 to 4.4 and then to 1.7 by 24 hours postoperatively. The mean hospital stay was 2.8 days. Complications included one hydrocele and two recurrent varicoceles. The operating time decreased as the surgeon's experience increased. CONCLUSION: Laparoscopic varicocelectomy with a two-port scarless periumbilical mini-incision is a feasible technique that can be mastered relatively easily. Prospective and comparative studies are required to validate this new technique.

Laparoscopic partial nephrectomy in upper-pole apical renal tumor using gauze sling and flexible laparoscope.

Upper-pole apical renal tumors are difficult to see using conventional rigid laparoscopes during laparoscopic partial nephrectomy. Added to this, the instrument angle makes tumor excision and kidney reconstruction difficult. We therefore elevated the kidney using a gauze sling and observed the lesion through a flexible laparoscope. With a clear field of vision, we could excise tumors and repair the kidney more easily.

Clinicopathologic Characteristics and Treatment Outcomes of Penile Cancer.

PURPOSE: The aim of this study was to assess the clinicopathologic characteristics of penile cancer, including patterns of therapy, oncologic results, and survival. MATERIALS AND METHODS: Between January 2005 and July 2015, 71 patients at 6 institutions who had undergone penectomy or penile biopsy were enrolled. Their medical records were reviewed to identify the mode of therapy, pathology reports, and cancer-specific survival (CSS) rate. RESULTS: Clinicopathologic and outcome information was available for 52 male patients (mean age, 64.3 years; mean follow-up, 61.4 months). At presentation, 17 patients were node-positive, and 4 had metastatic disease. Management was partial penectomy in 34 patients, total penectomy in 12 patients, and chemotherapy or radiotherapy in 6 patients. The pathology reports were squamous cell carcinoma in 50 patients and other types of carcinoma in the remaining 2 patients. Kaplan-Meier survival analysis showed a 5-year CSS rate of 84.0%. In univariate and multivariate analyses, the American Joint Committee on Cancer (AJCC) stage and pathologic grade were associated with survival. CONCLUSIONS: Partial penectomy was the most common treatment of penile lesions. The oncologic outcomes were good, with a 5-year CSS of 84.0%. The AJCC stage and pathologic grade were independent prognostic factors for survival.

Computed Tomography Imaging Features and Changes in Hemostatic Agents After Laparoscopic Partial Nephrectomy.

PURPOSE: Urologists and radiologists should be aware of the CT scan appearance of laparoscopic partial nephrectomy (LPN) with the various hemostatic agents since they may confound the interpretation of these radiographic findings. We report the various postoperative CT scan appearance and changes after LPN. MATERIALS AND METHODS: We reviewed CT scans retrospectively (within 3 months) of 86 patients who underwent LPN using various hemostatic agents between March 2008 and July 2014. We analyzed the CT findings after LPN, including postoperative changes, tumor recurrence, and complications. We also discuss changes in abnormal features, such as mass-like lesions and gas formation, on follow-up CT scans. RESULTS: To categorize the postoperative changes, we classified them according to their specific CT findings: (1) a combination of perinephric stranding and postsurgical fluid collection (n = 46), (2) mass-like lesions (n = 35), (3) a parenchymal defect (n = 2), (4) local recurrence at the surgical site (n = 1), (5) a large hematoma as a complication after LPN (n = 2), (6) gas pockets, which may be a response to postsurgical fluid collection around soft tissue (n = 35), (7) fat at the excision site (n = 2; Fig. 7 ), and (8) contrast extravasation in the delayed phase (n = 1). Mass-like lesions were visible in 35 cases. The average change in size of bolster masses was -1.19 mm/month. However, the overall change in enhancement of mass-like lesions was not significant over time. Foci of gas were noted in 16 patients at the resection site in the first follow-up period (<3 months), as late as 40 days after the procedure. CONCLUSIONS: Knowledge of CT imaging features and changes in hemostatic agents following LPN is important in interpreting postoperative CT scans, as postoperative changes can be confused with tumor recurrence and can mimic abscesses.

"Off-clamp, non-renorrhaphy" laparoscopic partial nephrectomy with perirenal fat and Gerota's fascia reapproximation: initial experience and perioperative outcomes.

PURPOSE: To describe our initial experience of "off-clamp, non-renorrhaphy" laparoscopic partial nephrectomy (OCNR-LPN) with perirenal fat and Gerota's fascia reapproximation technique. PATIENTS AND METHODS: Between August 2012 and March 2013, 24 consecutive patients underwent OCNR-LPN at our institution. After the renal mass excision, biologic hemostatics such as FLOSEAL™ and TISSEEL™ (both from Baxter Healthcare Corp., Deerfield, IL) were used, and the perirenal fat and Gerota's fascia were sutured for reapproximation. RESULTS: All 24 consecutive patients underwent OCNR-LPN successfully. The warm ischemic time for all cases was 0 minute. Thirteen patients were noted to have a low (4-6) RENAL nephrometry score (RNS), and 11 patients had a moderate (7-9) RNS. The mean tumor size among this cohort was 2.9 (range, 1.2-6.0) cm, and the mean estimated blood loss was 243 (range, 50-700) mL. The mean hospital stay was 6.9 (range, 5-10) days. The mean percentage of postoperative estimated glomerular filtration rate change increased by 0.9%. No positive surgical margins were noted, and 2 patients with Grade III complication by the Clavien-Dindo classification were treated by endoscopic or radiological intervention. CONCLUSIONS: OCNR-LPN with the perirenal fat and Gerota's fascia reapproximation technique is feasible. Our initial experience with OCNR-LPN demonstrates encouraging results of minimal renal function loss and complications.

Factors Influencing the Operative Approach to Renal Tumors: Analyses According to RENAL Nephrometry Scores.

PURPOSE: To evaluate the relationship between RENAL nephrometry score (RNS) and operative approach for renal masses. MATERIALS AND METHODS: This study included 206 consecutive patients who underwent renal tumor surgery between January 2008 and October 2012. We divided the patients into four groups by surgical approach: open radical nephrectomy (ORN, 53 patients), laparoscopic radical nephrectomy (LRN, 83 patients), open partial nephrectomy (OPN, 31 patients), and laparoscopic partial nephrectomy (LPN, 39 patients). We retrospectively assessed the RNS for each surgery group and evaluated the relationship between this score and operative approach. RESULTS: The mean RNSs of the ORN, LRN, OPN, and LPN groups were 9.75, 8.35, 6.72, and 5.76, respectively. When the RNS was analyzed according to nephron-sparing, the mean RNSs of the RN groups (ORN and LRN) and the PN groups (OPN and LPN) were significantly different (8.89 and 6.09, respectively; p<0.001). All the individual components of the RNS were significantly different between RN and PN. In the RN groups, the criteria for open versus laparoscopic surgery were based on tumor size ('R' score=2.43 for open, 1.54 for laparoscopic, p<0.001) and tumor location relative to the polar line ('L' score=2.55 for open, 2.09 for laparoscopic, p=0.006). In the PN groups, the criteria for open or laparoscopic surgery were based only on exophytic/endophytic property ('E' score=1.87 for open, 1.41 for laparoscopic, p=0.046). CONCLUSIONS: The RNS was significantly different in all surgery groups. The decision to take a laparoscopic approach was primarily influenced by the R and L scores for RN and by the E score for PN.

The efficacy of adjuvant chemotherapy for locally advanced upper tract urothelial cell carcinoma.

OBJECTIVE: To evaluate the efficacy of adjuvant cisplatin-based chemotherapy for locally advanced upper tract urothelial cell carcinoma (UTUC) following radical nephroureterectomy with bladder cuff resection (RNU) in terms of survival and recurrence. MATERIALS AND METHODS: Between January 2000 and January 2013, among 145 patients with upper tract urothelial cell carcinoma, a total of 65 patients with locally advanced UTUC (a diagnosis of pT3 or pT4 or pT1-2N1-3) underwent RNU. Of these 65 patients, 36 patients received at least three cycles of adjuvant gemcitabine plus cisplatin chemotherapy and the remaining 29 patient did not receive adjuvant chemotherapy. Clinical characteristics, bladder recurrence, distant metastasis, and cancer-specific survival were retrospectively reviewed. RESULTS: The mean age of the 65 patients was 60.4 (range, 37-87) years and the median follow-up period was 34 (range, 12-114) months. Patent demographics were not statistically different between the two groups. During the follow-up period, 14 patients (21.5%) experienced distant metastasis; 8 (8/36, 22.2%) patients who had undergone adjuvant chemotherapy and 6 (6/29, 20.7%) patients who did not. Bladder recurrence was noted in 17 patients (26.2%), 5 (5/36, 13.9%) of whom received adjuvant chemotherapy while the remaining 12 (12/29, 41.4%) did not. Kaplan-Meire and multivariate analysis showed that the incidence of bladder recurrence was significantly higher in patients who did not undergo adjuvant chemotherapy, and cancer specific survival was not significantly associated with adjuvant chemotherapy. CONCLUSIONS: Adjuvant chemotherapy for locally advanced UTUC can prevent bladder recurrence, but has a minimal effect on cancer-specific survival.

Changes in renal function after laparoscopic partial nephrectomy: comparison with laparoscopic radical nephrectomy.

PURPOSE: To evaluate alterations in renal function after laparoscopic radical nephrectomy (LRN) and laparoscopic partial nephrectomy (LPN) for renal tumors. MATERIALS AND METHODS: From March 2008 to August 2011, we performed 175 cases of laparoscopic kidney resection. Among these, we excluded patients who received perioperative immunotherapy or target therapy and also patients with a preoperative estimated glomerular filtration rate (eGFR) <60 mL/min. A total of 32 patients undergoing LPN and 92 patients undergoing LRN were enrolled. We retrospectively reviewed the changes in eGFR (by the modification of diet in renal disease method) at the following time points: preoperative, postoperative 1 week, and postoperative 1, 3, 6, and 12 months. RESULTS: The mean warm ischemia time of the LPN group was 22 minutes (range, 0 to 47 minutes). Mean eGFR values (mL/min/1.73 m(2)) during postoperative week 1 and 1, 3, 6, and 12 months were 70.8, 71.5, 76.7, 76.0, and 75.3 in the LPN group and 52.1, 50.6, 52.8, 53.4, and 52.4 in the LRN group, respectively. One year after the operation, 6.3% (2 patients) of LPN patients and 68.5% (63 patients) of LRN patients had progressed to chronic renal insufficiency (eGFR<60 mL/min/1.73 m(2)). CONCLUSIONS: Renal function recovered slightly after LPN and LRN and was maintained constantly after 3 months. However, renal function showed different patterns of decrease. Despite the concern for warm ischemia, LPN can preserve renal function better than can LRN. LPN should be considered for selected patients to prevent chronic renal insufficiency.

Pilot study of the clinical significance of serum and urinary her-2/neu protein in bladder cancer patients.

PURPOSE: HER-2/neu overexpression is documented in some bladder cancers. To our knowledge, there are no current studies evaluating urine HER-2/neu levels. Therefore, we examined the clinical significance of serum and urine HER-2/neu protein in bladder cancer. MATERIALS AND METHODS: Urothelial bladder carcinoma patients (n=38, including 31 men and 7 women) and healthy controls (n=25, including 20 men and 5 women) were included in the study. Urine cytology and serum and urine HER-2/neu levels were measured before the transurethral resection of bladder tumor procedure. Prognostic factors including tumor stage, histologic grade, tumor size, multiplicity, and preoperative urine cytology and their association with urinary HER-2/neu were analyzed by simple and multiple regression analyses. RESULTS: There was no significant difference in serum HER-2/neu between the two groups (p=0.489). The mean urinary HER-2/neu was 7,586.82 relative luminescence unit (RLU) in bladder cancer patients and 4,245.84 RLU in healthy controls. The mean RLU values of urinary HER-2/neu in the bladder cancer patient group were significantly higher than in healthy controls (p=0.012). An receiver operating characteristic curve was generated, and using the cutoff value of ≥4,800 RLU of urinary HER-2/neu, 71.1% sensitivity and 84.0% specificity were obtained. Among the clinical factors, only positive preoperative urine cytology samples were associated with urinary HER-2/neu levels by both simple and multiple regression analyses. CONCLUSIONS: Bladder cancer patients demonstrated significantly higher urinary HER-2/neu than did healthy controls. These findings suggest that urinary HER-2/neu may be valuable as a new urinary marker. The application of urinary HER-2/neu needs additional investigation.

Incidental prostate cancer detected by cystoprostatectomy in Korean men.

OBJECTIVES: To determine the incidence and characteristics of incidental prostate cancer diagnosed by cystoprostatectomy (CPT) in Korean men. METHODS: Thirty-six consecutive male patients scheduled to undergo CPT were prospectively enrolled. The CPT specimens were examined and the clinicopathologic characteristics of incidental cancers compared with those of T1c prostate cancers that had undergone radical prostatectomy. Complete transverse sections of the prostate were taken from the apex to the base at 4-mm intervals. RESULTS: Of the 36 CPT patients, 18 (50%) had incidental prostate cancer. Most of the incidental tumors were confined to the prostate gland, except in 1 patient. Tumor involvement at the prostate apex was found in 3 patients (16.7%), and Gleason scores in 3 cases were 7 to 10. Median tumor volume was 0.08 cm(3) (range, 0.01 to 20.51 cm(3)), and a tumor volume of more than 0.5 cm(3) was identified in 5 patients. Of these incidental prostate cancers, 38.9% (19.4% of all CPT patients) were clinically significant. As compared with the 38 T1c prostate cancer patients, incidental prostate cancer patients were older, had a lower prostate-specific antigen level, a lower grade, smaller tumor volume, and were less likely to have multiple tumors. However, no significant differences were observed between these two groups with respect to apical tumor involvement or tumor confinement to the prostate (P >0.05 for each). CONCLUSIONS: Incidental prostate cancers were diagnosed in 50% of CPT specimens, and 19.4% of these were clinically significant.