Pain and morbidity of an extensive prostate 10-biopsy protocol: a prospective study in 289 patients.

PURPOSE: Some studies imply that increasing the number of prostate biopsy cores may improve the cancer detection rate. We performed a prospective study to evaluate pain and morbidity after an extensive transrectal ultrasound guided 10-core biopsy protocol. MATERIALS AND METHODS: A total of 289 consecutive men with abnormal digital rectal examination findings and/or increased prostate specific antigen underwent extensive prostate biopsy involving 6 sextant and 4 peripheral biopsies. Each received an information leaflet a few days before the procedure. A single dose of fluoroquinolone and a rectal enema were administered before biopsy. In no case was the procedure performed using anesthesia. Immediately after biopsy patients were asked to complete a self-administered nonvalidated questionnaire evaluating the degree of pain and/or discomfort using a visual analog scale. In another questionnaire they listed the side effects noticed during month 1 after biopsy. RESULTS: Although 48% of the 275 men who completed the initial questionnaire reported anxiety before the procedure, 78.8% of them were completely reassured by the information brochure. Of the 275 patients 47.6% described the procedure as painful, including only slightly painful (analog visual scale 3 or less) in 67.9%, while 33.8% described it as uncomfortable but not painful and 18.6% thought that it was neither painful nor uncomfortable. Of the 115 patients who engaged in sexual intercourse during month 1 after the procedure 78.3% noticed hematospermia an average of 10.9 days in duration. Of the 164 men who completed questionnaire 2, 74.4% noticed hematuria an average of 2.7 days in duration, 3.7% noticed pyrexia and 1.2% noticed acute prostatitis. In the 59 patients (36%) who reported delayed perineal pain it was slight in 64.4%, moderate in 30.5% and severe in 5.1%. No patient required hospitalization. CONCLUSIONS: Although minor complications are common, the extensive 10-core prostate biopsy protocol is associated with few major complications. The occurrence and intensity of pain and discomfort are in the range reported after the standard 6-core biopsy protocol.     

Effects of the Bowman-Birk inhibitor on growth, invasion, and clonogenic survival of human prostate epithelial cells and prostate cancer cells

BACKGROUND: The Bowman-Birk inhibitor (BBI) is a soybean-derived serine protease inhibitor with demonstrated anticarcinogenic activity in both in vitro and in vivo systems. METHODS: The effects of BBI and BBI Concentrate (BBIC), a soybean concentrate enriched in BBI, on cell growth, invasion, and/or survival were evaluated by the sulforhodamine B assay, a colony formation assay, the trypan blue dye exclusion assay and an in vitro invasion assay. The cells used in these studies were normal human prostate epithelial cells and prostate epithelial cell lines derived from embryonic prostate tissue (267B1) or benign prostatic hyperplasia (BPH) tissue (BRF-55T) and human prostate cancer cells established by Ki-ras oncogene transfection of 267B1 cells (267B1/Ki-ras) or from metastatic lesions of human prostate cancer (LNCaP and PC-3). RESULTS: BBIC had a statistically significant inhibitory effect on the growth and clonogenic survival of BRF-55T, 267B1/Ki-ras, LNCaP, and PC-3 cells. BBI also inhibited the growth of LNCaP cells and the clonogenic survival of BRF-55T and 267B1/Ki-ras cells and decreased the ability of LNCaP cells to invade across reconstituted basement membrane (Matrigel) when PC-3 cell-conditioned medium was utilized as the chemoattractant. BBI or BBIC did not affect the growth of normal prostate epithelial cells. CONCLUSION: BBI and/or BBIC could be a useful agent for treatment of prostate diseases.     

Cholinergic and purinergic contribution to the micturition reflex in conscious rats with long-term bladder outlet obstruction

The urethra of female Wistar rats was partially obstructed for 15 weeks. The effects of atropine (1 mg/kg i.v.), suramin (100 mg/kg i.v.), and a combination of atropine and suramin on the peak micturition pressure (MP) were compared during cystometry in conscious rats controls or subjected to outlet obstruction. On the isolated bladder dome, we studied the inhibitory effect of 1 micromol/L atropine, 1 mmol/L suramin, and the combination of the two drugs on contractions induced by electrical field stimulation (EFS). We studied also the contractile response to 80 mmol/L KCl and the concentration-response curves to noradrenaline, phenylephrine, and carbachol on the bladder dome and bladder neck and alpha, beta-methylene adenosine triphosphate on the bladder dome. In conscious rats, the MP, bladder capacity, and micturition volume were significantly higher in obstructed rats than in controls. Suramin induced the same inhibition in the two groups of animals (-30.7 +/- 13.3% in controls and -29.2 +/- 8.5% in obstructed rats). Atropine decreased the MP, but this effect was twofold greater in obstructed animals (-28.1 +/- 3.1% and -65.1 +/- 6.9% in control and obstructed animals, respectively). However, the combined effect of atropine and suramin was additive in controls but not in obstructed (-56.7 +/- 5.4% and -55.9 +/- 9.4%, respectively). Similar results were obtained in vitro using 1 micromol/L atropine and 1 mmol/L suramin. In the obstructed bladder dome and bladder neck, we found a great reduction in KCl- and carbachol-induced contractility but no difference in the response to EFS. Responses to noradrenaline and phenylephrine were moderately reduced in the bladder neck only, whereas responses to alpha, beta-methylene adenosine triphosphate in the bladder dome were not reduced except at the concentration of 300 micromol/L. We conclude that long-term obstruction in rats could induce cholinergic nerve fiber proliferation as suggested by the decrease in M(3) muscarinic receptor contractility (desensitization) and by a greater sensitivity of the MP to atropine.     

分叶剜除法在双极等离子体前列腺腔内剜除术中的应用

目的探讨分叶剜除法在双极等离子体前列腺腔内剜除中应用的价值。方法对92例需行前列腺增生手术的患者,在行双极等离子体腔内剜除术的过程中,加以应用分叶剜除法,观察手术的时间、术中并发症的出现情况。结果所有利用分叶法行前列腺腔内剜除术的患者手术均顺利完成,手术时间均控制在2h以内。有2例患者,只行单叶的剜除,拔出尿管后均不影响排尿,尿流率测定大于10ml/s。结论对于初学者而言,利用分叶剜除法行双极等离子体前列腺腔内剜除术,既可以保证手术安全及疗效,又可以缩短前列腺剜除术学习周期。     

经尿道前列腺电切术与双极等离子电切术治疗良性前列腺增生的临床比较

目的比较经尿道前列腺电切术(TURP)与经尿道前列腺双极等离子电切术(PKRP)治疗良性前列腺增生(BPH)的近期临床疗效、安全性。方法将146例确诊为BPH患者随机分为2组,每组各73例,分别采用PKRP和TURP,2组病例术前前列腺症状评分(IPSS)、生活质量评分(QOL)、剩余尿量(RUV)、最大尿流率(Qmax)比较差异均无统计学意义(P0.05),比较术前术后临床的各项指标及两种手术方法的效果。结果 2组患者手术时间、手术前后血红蛋白变化程度、术前术后血钠浓度差异均有显著性意义(P0.01);术后3、6个月随访,2组IPSS、QOL、RUV均较术前明显下降,Qmax均较术前明显增加,组间比较差异均无统计学意义(P0.05)。术后膀胱冲洗时间、留置导尿时间差异无统计学意义(P0.05)。TURP组并发症发生率27.3%,PKRP组术后并发症发生率8.2%,并发症发生率差异有统计学意义。结论 PKRP与TURP比较,治疗BPH近期疗效相似,但PKRP安全性更高,并发症少。     

经尿道双极等离子前列腺腔内剜除术治疗前列腺增生220例临床疗效分析

目的观察前列腺增生腔内治疗方法——经尿道双极等离子前列腺腔内剜除法的临床疗效。方法对220例前列腺增生患者行经尿道双极等离子前列腺腔内剜除术,观察手术时间,术中出血量,术后留置导尿管时间,术后并发症,比较手术前后的国际前列腺症状评分(IPSS)、生活质量评分(QOL)、残余尿量(RU)、最大尿流率(Qmax)的差异。结果手术时间30～90min,平均40±10min;术中出血量70±10ml;术后留置导尿管时间4±0.5d;全部患者随访6～12个月,IPSS由27.8±2.3分下降9.6±2.6、QOL由5.5±0.5减少至1.5±0.5;剩余尿量由110±7ml下降到25±4ml;Qmax由8.0±2.3ml/s上升至18±2.4ml/s。所有病例随访6～12个月。结论经尿道双极等离子前列腺腔内剜除法切除组织彻底,出血少,并发症少,技术可行,疗效确定。     

Focal nodular hyperplasia in children: clinical features and current management practice

Background

Although nonoperative management is an accepted practice for most adults with focal nodular hyperplasia (FNH), questions remain about the safety and feasibility of this strategy in children. Our aim was to review the clinical features of children with FNH and determine current management patterns.

Methods

We reviewed records of all children and adolescents with FNH managed at our institution from 1999 to 2009 and performed a MEDLINE search to identify all published cases of FNH in the pediatric population.

Results

A total of 172 patients with FNH were identified, including 11 at our institution. The median age at diagnosis was 8.7 years and 66% were female. Median tumor size was 6 cm, and 25% had multiple lesions. Thirty-six percent were symptomatic at presentation. Twenty-four percent had a history of malignancy. Management included resection (61%), biopsy followed by observation (21%), and observation alone (18%). Indications for resection included symptoms (48%), inability to rule out malignancy (24%), tumor growth (15%), and biopsy-proven concurrent malignancy (9%).

Conclusions

Although FNH is a benign lesion that is typically managed nonoperatively in adults, most children with FNH currently undergo resection because of symptoms, increasing size, or inability to confidently rule out malignancy.     

前列腺增生经尿道电切术近期出血的原因和处理

目的探讨经尿道前列腺电切术（TURP）治疗前列腺增生术后近期出血的原因与处理方法。方法对本院12年来前列腺增生经尿道电切术后近期出血的52例患者进行回顾分析其原因及止血方法。结果出血的原因主要有患者高龄、高危等和在治疗中处理失当等。41例经保守治疗而好转,11例经保守治疗无效,麻醉后重新置入电切镜,冲洗血凝块,充分电凝、止血后好转。结论全面的术前分析、准确的术中和术后处理,是减少前列腺增生患者TURP术后出血的关键。     

良性前列腺增生患者膀胱出口梗阻和逼尿肌功能的分析

目的：探讨尿动力学检查对BPH患者膀胱出口梗阻（BOO）和逼尿肌功能的诊断意义.方法：对95例BPH患者进行压力-容积和压力-流率测定.结果：95例BPH患者中BOO 57例,无BOO23例,其余15例为可疑或分析困难.BOO组前列腺体积大于无BOO组（62.4±16.1）cm^3 vs（41.0±7.1）cm^3（P＜0.05）,最大尿流率（Qmax）小于无BOO组（5.4±1.9）ml/s vs（12.4±5.0）ml/s（P＜0.05）,两组IPSS评分无差别（23.7±4.4）分vs（25.2±4.9）分（P＞0.05）.BOO组有逼尿肌不稳定收缩（DD34例,无BOO组D119例.结论：尿动力学检查有助于判断有无BOO存在,了解BPH患者的逼尿肌功能.IPSS不能判断患者的下尿路症状（LUTS）是否因BOO导致.BPH患者前列腺体积不足很大,但LUTS明显时,应行尿动力学检查.自由尿流率测定对BOO诊断有一定帮助.DI是无BOO患者发生LUTS的重要因素.