A clinical study on 34 cases of urothelial cancer of upper urinary tract

Thirty-four cases of tumor of the renal pelvis or ureter or both have been treated in our department during the past decade. The primary tumor was in the renal pelvis in 11 cases, in the ureter in 21 cases and in the ureter and renal pelvis in 2 cases, a co-existent tumor in the bladder was found in 4 cases. Seventeen patients had a tumor on the right side and 17 on the left side. The most frequent symptom was gross hematuria (70.6%) and flank pain was the presenting symptom in 7 cases (20.6%). On the intravenous pyelography, a filling defect in the renal pelvis or ureter (41.2%) and nonvisualization (53.0%) were frequent findings. Twenty-nine cases had undergone total nephroureterectomy with resection of a bladder cuff, 3 had simple nephrectomy and 2 had open biopsy alone. Postoperative radiation therapy was done in 1 case, chemotherapy in 10 cases, and 6 cases of them were treated by CAP therapy (cis-dichlorodiamine platinum, doxorubicin and cyclophosphamide). Actual and relative 5-year survival rates were 53.8% and 63.5%, and no significant difference was found in survival rate between the patients with renal pelvic tumors and those with ureteral tumors.     

低分期上尿路上皮癌根治手术不加膀胱袖状切除的可行性分析

目的 分析低分期肾盂及中上段输尿管尿路上皮癌行根治性肾切除术与经典肾盂癌根治性手术后肿瘤复发率的差异,探讨低分期上尿路上皮癌患者不行膀胱袖状切除的可行性.方法 回顾性分析2000-2007年收治73例上尿路上皮癌患者的资料.男36例,女37例.平均年龄66(45～87)岁.其中肾盂癌46例,中上段输尿管癌27例.根据术式分为经典肾盂癌根治性手术组(35例)和根治性肾切除组(38例).分析2组患者病理及随访结果,比较2组患者术后复发率的差异.结果 经典肾盂癌根治性手术组肿瘤复发8例(22.9%),其中T1患者复发率20.0%(3/15);根治性肾切除组肿瘤复发8例(21.1%),其中T1患者复发率19.0%(4/21),2组总复发率和T1肿瘤复发率差异无统计学意义(P>0.05).经典肾盂癌根治性手术组19例肾盂癌中,肿瘤复发4例(21.1%);16例中上段输尿管癌中,肿瘤复发4例(25.0%),2组肿瘤复发率差异无统计学意义(P>0.05).根治性肾切除组27例肾盂癌中,肿瘤复发3例(11.1%);11例中上段输尿管癌中,肿瘤复发5例(45.5%),2组肿瘤复发率差异有统计学意义(P<0.05).结论 低分期上尿路上皮癌患者可不行膀胱袖状切除术,但肿瘤位于输尿管者应行膀胱袖状切除术.     

Modified pluck method in en bloc nephroureterectomy with bladder cuff for upper urothelial cancer

AIM: To evaluate the surgical results of the en bloc removal of the kidney and ureter with a bladder cuff by using our modified pluck method. METHODS: We employed this procedure in 28 patients with renal pelvic and ureteral cancer. The clinical stages of the 28 patients were T(1-3)N(0-1)M(0). These patients were operated on by nephrectomy with standard open or retroperitoneoscopic surgery, and then standard or blind dissection of the distal ureter. After simultaneously making a transurethral circular incision of the ureteral meatus with a J-shaped electrode, the ureteral end was plucked out of the bladder, and en bloc removal of the kidney and ureter was performed from the wound. RESULTS: The mean operating time for nephroureterectomy using the pluck method was 278 min in all cases. The mean time for the pluck procedure after nephrectomy was 24 min in 22 cases, and 73 min in six cases where the nephrectomy was carried out via a new lower pararectal wound. There were no intra- or postoperative complications associated with these procedures. Within the mean follow-up period of 25 months, there was no recurrence of tumors in the perivesical retroperitoneal space; however, the usual rate of intravesical recurrence was observed. Three patients died, two of metastatic urothelial cancer and one of heart disease. CONCLUSIONS: En bloc nephroureterectomy using our modified pluck method is a useful procedure for patients with upper urothelial cancer because of the simplicity and ease of the procedure.     

经腹肾癌根治术并系统性淋巴结清扫治疗肾细胞癌临床分析(附136例报告)

目的 评价经腹腔肾癌根治性肾切除术并系统性淋巴结清扫术的安全性和疗效.方法 回顾性分析2004年7月至2008年6月经腹直肌旁切口行根治性肾切除和系统性淋巴结清扫术治疗肾细胞癌136例患者的资料.男92例,女44例;年龄23～81岁,平均54岁.肿瘤最大径15～170 mm,平均55 mm.体检时B超检查发现66例(61%),以皮肤转移为首发症状者2例.术前均进行B超、CT及核素骨扫描检查,肿瘤临床分期:T1 108例,T2 14例,T3 12例,T4 2例.结果 本组手术时间90～180 min,平均120 min.出血量20～400 ml,平均50 ml.术后肠道功能恢复时间为(24±12)h,术后住院天数为(7±2)d.术后病理结果:肾透明细胞癌123例(90.4%),乳头状肾细胞癌6例(4.4%),嫌色细胞癌2例(1.4%),集合管癌2例(1.4%),其他3例(2.2%).淋巴结转移8例.T1期92例,T2期11例,T3期10例,T4期10例.95例(69.9%)获随访,随访时间6～40个月,平均20个月.1、3年生存率分别为95.8%(91/95)、86.3%(82/95).结论 系统性淋巴清扫肾癌根治术能有效切除肿瘤,可准确分期,防止局部复发,安全可靠,疗效良好.

Abstract：

Objective To assess the safety and efficacy of abdominal radical nephrectomy and systematic lymph node dissection for treatment of renal carcinoma. Methods A total of 136 patients underwent radical nephrectomy and regional clearance of lymph nodes from July 2004 to June 2008.There were 92 males and 44 females in the study group.Ages ranged from 23 to 81 years,with a mean age of 54 years.The mean tumor diameter was 55 mm (range,15-170 mm).The tumor size detected by CT and MRI was consistent with that detected by B-ultrasound,98 were stage Ⅰ,13stage Ⅱ,12 stage Ⅲ,and 2 stage Ⅳ. Results All 136 cases underwent radical nephrectomy with retroperitoneal lymphadenectomy.All operations were successful without any major complication.The operative time was 90 to 180 min,with an average of 120 min,and blood loss was 20-400 ml,with an average of 50 ml.The pathological diagnoses were as follows: renal cell carcinoma 123 cases (90%), papillary renal cell carcinoma six cases(4%),chromophobic two cases(1.4%),oncocytoma two cases(1.4%),collecting duct two(1.4%),and others three cases(2.2%).Eight cases reported positive lymph nodes.Of the 136 cases,92 cases were T1 N0 M0,11 were T2 N0 M0,10 were T3 N0 M0,eight were T3 N1 M0 and two were T1 N0 M1.Ninety-five cases (70%) were followed-up at six to 40 months (mean,20 months).The one year and three year survival rates were 96% (91/95) and 86% (82/95),respectively.Conclusions Radical nephrectomy with systematic lymph dissection has advantages of accurate staging,effective resecting of renal tumors and preventing recurrence.Radical nephrectomy is an effective method for the treatment of renal carcinoma.     

Adjunctive nephrectomy at post-chemotherapy retroperitoneal lymph node dissection for nonseminomatous germ cell testicular cancer

PURPOSE: Patients with metastatic testicular cancer with residual masses encasing the renal hilum or kidney after platin based chemotherapy may require adjunctive nephrectomy to achieve complete resection at post-chemotherapy retroperitoneal lymph node dissection. We reviewed our experience with adjunctive nephrectomy to assess the impact on cancer control and renal function. MATERIALS AND METHODS: Of 647 post-chemotherapy retroperitoneal lymph node dissection procedures performed at our institution since 1989 adjunctive nephrectomy has been performed in 32 patients (5%). Patient information was obtained from a prospective database. Median followup was 31 months. RESULTS: Of the adjunctive nephrectomy procedures 17 (53%) were performed in high risk settings such as post-salvage chemotherapy, desperation retroperitoneal lymph node dissection, late relapse and reoperative retroperitoneal lymph node dissection. Disease was present in the adjunctive nephrectomy specimen in 21 patients (66%). Following post-chemotherapy retroperitoneal lymph node dissection 7 patients had disease relapse and 5-year disease-free survival was 66%. No case of relapse required substitution for cisplatin due to compromised renal function. Progression to chronic renal insufficiency occurred in 3 patients, 1 of whom required hemodialysis. The calculated creatinine clearance after adjunctive nephrectomy was more than 30% below the age specific norm in 14 patients (50%) and median patient age was 40 years. CONCLUSIONS: Adjunctive nephrectomy at post-chemotherapy retroperitoneal lymph node dissection is most frequently performed in patients with high risk features to ensure the completeness of resection. When indicated, adjunctive nephrectomy should be performed because residual cancer is frequently present and long-term cancer control can be achieved in 66% of patients. Although adjunctive nephrectomy did not interfere with subsequent chemotherapy, the renal reserve in these patients was substantially reduced in 50%, emphasizing the importance of preventative measures to preserve long-term renal function.     

A clinicopathological study on tumor of the renal pelvis and ureter

We report 42 patients with urothelial tumors in upper tract admitted to our hospital between August, 1969 and August, 1988. The patients consisted of 33 males and 9 females; their ages ranged from 42 to 85 years with a mean of 66.2 years. Total nephroureterectomy with bladder cuff resection was employed as the surgical method in 24 cases, total nephroureterectomy without bladder cuff resection in 11 cases, total nephroureterectomy with total cystectomy in 2 cases and partial ureterectomy only in 2 cases. Tumor lesions had a positive correlation with grade and stage. The survival rate for all the patients at 1, 3 and 5 years was 76.0, 58.8 and 54.6%, respectively, as measured by the Kaplan-Meier's method. The prognosis of the patients with renal pelvic tumor and ureter tumor was dependent upon grade, stage and intravascular tumor-emboli. Vesical recurrence was observed in 10 cases and found frequently in low grade tumor and/or low stage tumor cases. The frequency of vesical recurrence was not positively correlated with cuff resection The 5-year survival rate was not different between the patients with vesical recurrence and those without vesical recurrence.     

Oncological safety of laparoscopic surgery for urological malignancy: experience with more than 1,000 operations

PURPOSE: Although laparoscopy is being increasingly used to treat urological malignancies, there is still concern regarding the induction of local recurrence and port site metastasis. To our knowledge no major clinical study with long-term followup has been presented in the field of urological laparoscopy. We assessed the oncological safety of laparoscopy with emphasis on incidence of local recurrence and port site metastasis, analyzing the risk factors for such events based on a 10-year experience. MATERIALS AND METHODS: From June 1992 to May 2002 we performed 1,098 laparoscopic procedures for urological malignancies, including 450 radical prostatectomies, 478 pelvic and 80 retroperitoneal lymph node dissections, 45 radical nephrectomies, 22 radical nephroureterectomies, 12 partial nephrectomies and 11 adrenalectomies. In 418 cases of laparoscopic radical prostatectomy pelvic lymphadenectomy was done simultaneously. Of the procedures 917 were performed transperitoneally, including 181 via retroperitoneal or extraperitoneal access. A total of 567 procedures were performed in case of histologically proven cancer, whereas 531 represented only staging operations. RESULTS: Median followup was 58 months (range 4 to 127). Eight local recurrences were observed (0.73% overall, 1.41% of histologically proven cases). There were recurrences after nephroureterectomy for transitional cell carcinoma of the ureter in 1 patient, after radical nephrectomy for renal cell carcinoma in 1, growing teratoma after retroperitoneal lymph node dissection in 2, local recurrence of prostate cancer in 3 and after removal of an adrenal metastasis of melanoma in 1. Two port site metastases (0.18% overall, 0.35% of histologically proved cases) occurred, including metastasis of small cell lung carcinoma after adrenalectomy and a residual mass following 2 cycles of chemotherapy after retroperitoneal lymph node dissection. CONCLUSIONS: According to our experience the incidence of local recurrence and the risk of port site metastases is low and seems to be mainly related to the aggressiveness of the tumor and immunosuppression status of the patient, respectively rather than to technical aspects of the laparoscopic approach.     

Tumor size and regional lymph node metastasis in patients with M0 renal cell carcinoma: analysis in those having regional lymph node dissection

We evaluated the relationship between regional lymph node metastasis and tumor size in patients with M0 renal cell carcinoma who received regional lymph node dissection. The study involved 234 of the 247 patients with localized renal cell carcinoma who underwent radical nephrectomy with lymph node dissection at our institute between 1985 and 1999. Patients were arbitrarily classified into 3 groups by the greatest diameter of the tumor on preoperative computed tomography (CT): 4.0 cm or less (group A), 4.1 to 7.0 cm (group B), and 7.1 cm or more (group C). The incidence of lymph node metastasis was assessed in each group. The current study showed that 11 (4.7%) of the 234 patients with lymph node dissection together with radical nephrectomy were lymph node positive. The incidences of lymph node metastasis were 4.0% in group A, 2.3% in group B, and 8.4% in group C (p = 0.79). Of these 11 patients with lymph node metastasis, 2 (18.2%) have so far survived for over 5 years following surgery. Although the role of regional lymph node dissection with radical nephrectomy might be limited and controversial in renal cell carcinoma, urological surgeons should always be aware of possible metastasis for any tumor size.     

Complications of 2,775 urological laparoscopic procedures: 1993 to 2005

PURPOSE: We assessed the complications associated with urological laparoscopic surgery at a single high volume center during a 12-year period. MATERIALS AND METHODS: A retrospective chart analysis was performed, focusing on complications associated with 2,775 laparoscopic surgeries occurring between 1993 and 2005. These included radical nephrectomy (549), partial nephrectomy (345), donor nephrectomy (553), simple nephrectomy (186), pyeloplasty (301), nephroureterectomy (105), retroperitoneal lymph node dissection (86), renal ablation (81), adrenalectomy (106) and radical prostatectomy (463). Complication data were tabulated according to case number, procedure type, patient age, the American Society of Anesthesiologists score, conversion status, length of hospitalization, Clavien classification system and annual complication rate during the study. Statistical analysis was performed with Fisher's exact and chi-square tests. RESULTS: A total of 614 complications (22.1%) occurred within each group, broken down into laparoscopic radical nephrectomy (20%), laparoscopic partial nephrectomy (28%), laparoscopic donor nephrectomy (28%), laparoscopic simple nephrectomy (15%), laparoscopic pyeloplasty (13.3%), laparoscopic nephroureterectomy (40.9%), laparoscopic retroperitoneal lymph node dissection (26.7%), laparoscopic renal tumor ablation (18.6%), laparoscopic adrenalectomy (25.4%) and laparoscopic radical prostatectomy (15%). Total intraoperative and postoperative complication rates were 4.7% and 17.5%, respectively. Vascular injuries were the most common intraoperative complications. Annual complication rates plateaued in the year 2000 and were not significantly different during the ensuing 4 years (p >0.05). Complications correlated with a greater American Society of Anesthesiologists score as well as a longer hospital stay (p <0.05). CONCLUSIONS: The data presented here help define the complication rates for laparoscopic urological procedures in experienced hands at a high volume institution.     

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??Surgical treatment decision of patients with pancreatic neuroendocrine tumors??An analysis of 60 cases WANG Hui-ling, OU Ying-liang, LI Han-hua, et al. Department of General Surgery??Guangdong General Hospital??Guangdong Academy Medical Sciences, Guangzhou 510080??China
Corresponding author??OU Jin-rui??E-mail??sygdwk@126.com.
Abstract Objective To identify the surgical treatment decision of pancreatic neuroendocrine tumors??PNETs??. Methods The clinical data of 60 cases of pancreatic neuroendocrine tumors admitted between January 2000 and January 2010 in Guangdong General Hospital were analized retrospectively. The correlations between prognosis and clinical characteristics, surgical method were studied. Results In 60 cases of PNETs, 32 cases (53.3%) were functional??and 28 cases (46.7%) were non-functional. G1??G2 and G3 grade tumors were 70%??15%??15% respectively. There were 8 cases of lymph node metastasis and 8 cases of liver metastasis. A total of 54 cases received R0 resection and 6 cases received palliative operation. The univeriate analysis indicated that tumor size, grade, lymph node metastasis and liver metastasis were the main influence factors for PNETs prognosis. Conclusion Surgery is still the main method to cure PNETs. Tumor size, grade, lymph node metastasis??liver metastasis are important factors for PNETs prognosis. More clinical research need to be done to support the surgical resection of PNETs with diameter less than 2cm. Furthermore??routine lymph node dissection should be done except for insulin tumor.     

Clinical studies on primary ureteral tumors

The 15 cases of the primary ureteral tumors treated at our Hospital between 1974 and 1983, were reviewed retrospectively. The incidence of primary ureteral tumors among the outpatients in our urologic clinic was 0.15%. The patients ranged in age from 50 to 75 years old (average: 65.5 years old). There were 11 males and 4 females, the ratio being 2.8:1.0. The right ureter and the lower third of the ureter were involved more frequently than other areas. The most frequent symptom was macrohematuria which was seen in 12 cases (80%). The major finding of IVP was non-functioning kidney, which was seen in 11 cases (73.3). Positive urinary cytology was obtained in 9 cases (60%). Twelve patients underwent nephroureterectomy with bladder cuff or total cystectomy. Histologically, all cases were transitional cell carcinoma. Simultaneous urothelial tumors were seen in the bladder in 4 cases (26.7%). The over-all actual survival rates at 1, 3 and 5 years were 59%, 42%, 42%, respectively. The 5-year actual survival rate was 63% for the low grade group and 0% for the high grade group. The 5-year actual survival rate was 82% for the low stage group and 0% for the high stage group. Among several factors, grade and stage of the tumor were the most influencing factors for prognosis.     

Renal cell carcinoma with retroperitoneal lymph nodes: role of lymph node dissection

PURPOSE: We better defined the benefits and morbidity of lymph node dissection in patients with localized renal cell carcinoma using the experience of patients treated at our institution. MATERIALS AND METHODS: A retrospective cohort study was performed with outcome assessment based on the chart review of demographic, clinical and pathological data in 1,087 patients with renal cell carcinoma treated at our institution. Patients with renal cell carcinoma who did not undergo nephrectomy as part of cancer treatment, those with bilateral disease and those for whom nodal status was unknown were not included in this study. A total of 900 patients meeting these criteria who underwent nephrectomy for unilateral renal cell carcinoma at our medical center form the principal study population. RESULTS: Positive lymph nodes were associated with larger, higher grade, locally advanced primary tumors that were more commonly associated with sarcomatoid features. Positive nodes were 3 to 4 times more common in patients with metastatic disease and the majority of these patients could be identified preoperatively. The survival of patients with regional lymph node involvement only was identical to that of patients with distant metastatic disease only. Patients with regional nodes and distant metastases had significantly inferior survival to those with either condition alone. In node negative cases lymph node dissection can be performed with no additional morbidity but it confers no survival advantage. In node positive cases lymph node dissection can also be performed safely but it is associated with improved survival and a trend toward an improved response to immunotherapy. CONCLUSIONS: Regional lymph node dissection is unnecessary in patients with clinically negative lymph nodes since it offers extremely limited staging information and no benefit in terms of decreasing disease recurrence or improving survival. In patients with positive lymph nodes lymph node dissection is associated with improved survival when it is performed in carefully selected patients undergoing cytoreductive nephrectomy and postoperative immunotherapy. When lymph nodes are present, they should be resected when technically feasible.     

A clinical investigation on renal pelvic and ureteral tumors]

Sixty-six patients with renal pelvic and ureteral tumors were treated in our hospital between June 1974 and June 1991. These cases consisted of 27 renal pelvic tumors, 31 ureteral tumors and 8 renal pelvic and ureteral tumors. Their ages ranged from 43 to 86 years old (average: 65). There were 46 males and 20 females. The surgical method involved total nephroureterectomy with a cuff for 44 patients, nephroureterectomy for 3, nephrectomy for 9, total nephroureterectomy with total cystectomy for 5 and partial ureterectomy for 2. Histologically, there were 60 transitional cell carcinomas (TCC), 2 squamous cell carcinomas (SCC) and 4 TCC with SCC. As for the pathological stage, 13 were pTa, 16 pT1, 12 pT2, 11 pT3, 13 pT4 and 1 pTX. Subsequent bladder tumors were found in 13 patients (19.7%). The overall survival rate at 1, 3 and 5 years were 80%, 68% and 52%, respectively according to the Kaplan-Meier's method. In this series, the pathological staging was the most important prognostic factor.     

甲状腺髓样癌临床诊疗方案分析

目的:探讨影响甲状腺髓样癌（medullary thyroid carcinoma,MTC）治疗方案制订与转归的关键要素。方法:回顾性分析2007年4月至2020年3月湖南省人民医院乳甲外科收治的23例MTC患者病例资料、典型病例的临床特点及生存随访结果,结合ATA等指南对MTC治疗方案和转归进行分析。结果:23例MT...     

Complications of transperitoneal laparoscopic surgery in urology: review of 1,311 procedures at a single center

PURPOSE: The development of laparoscopic surgery in urology is increasing rapidly. We describe our experience with complications during and after transperitoneal laparoscopic surgery after 9 years of practice. MATERIALS AND METHODS: A total of 1,311 laparoscopic procedures were performed by 5 senior urologists in the same department since 1992, of which 72% were classified as difficult or very difficult (prostatectomy, nephrectomy for cancer, nephroureterectomy, partial nephrectomy, cystectomy, para-aortic lymph node dissection), 27.5% as moderately difficult (nephrectomy for benign disease, adrenalectomy, genitourinary prolapse, ureteropelvic junction, pelvic and ureteral stones, ureterovesical reimplantation, pelvic lymph node dissection) and 0.5% as easy (lymphocele, renal cyst and so forth). RESULTS: There was no mortality or anesthetic complications. The overall transfusion rate was 2.4%. Complications were serious in 0.7% of cases, all of which required reoperation, intermediate in 1.8% of which 1% required reoperation and minor in 1.1%. The main complications were bowel (1.2%), vascular (0.5%) and ureteral injuries (0.8%). The conversion rate was 1.2% and the reoperation rate was 2.4%. Of the patients 1.2% had to be admitted to the intensive care unit. Postoperative complications were observed in 19% of cases. Laparoscopic surgery is associated with essentially the same complications as open surgery, and they, particularly bowel injuries and bleeding, can be diagnosed and often treated with repeat laparoscopy. CONCLUSIONS: Complications during and after transperitoneal laparoscopy remain low and are not superior to those observed during and after open surgery. As laparoscopy becomes more widely used, urologists wishing to learn this technique must realize that the learning process is long but essential.     

EN BLOC NEPHRECTOMY IN PATIENTS UNDERGOING POST-CHEMOTHERAPY RETROPERITONEAL LYMPH NODE DISSECTION FOR NONSEMINOMATOUS TESTIS CANCER: INDICATIONS, IMPLICATIONS AND OUTCOMES

Purpose

We review the indications for nephrectomy at post-chemotherapy retroperitoneal lymph node dissection, identify patients at risk for nephrectomy and assess the impact of nephrectomy on outcome.

Materials and Methods

Using a computerized data base and chart review we retrospectively reviewed the records of 848 patients who underwent retroperitoneal lymph node dissection after chemotherapy.

Results

En bloc nephrectomy was performed at retroperitoneal lymph node dissection after chemotherapy in 162 of the 848 patients (19%). The indications for nephrectomy included contiguous involvement of perirenal structures in 73% of the cases, renal vein thrombosis in 6%, a poorly functioning or nonfunctioning renal unit in 5% and a combination of these conditions in 16%. Pathological studies of the hilum revealed cancer in 20% of the cases, teratoma in 49% and fibrosis in 31%. Patients requiring nephrectomy had significantly more advanced disease and larger disease volume at presentation and after chemotherapy. There were no significant differences in perioperative morbidity or mortality compared with patients who did not undergo nephrectomy. Only 3 patients required perioperative dialysis and none required long-term renal support.

Conclusions

These findings support en bloc nephrectomy at post-chemotherapy retroperitoneal lymph node dissection in select patients with large volume perihilar retroperitoneal disease.     

多发性上尿路上皮癌的临床病理特点及预后分析

目的:探讨多发性上尿路上皮癌(UTUC)的临床和病理特点及预后。方法:回顾性分析230例UTUC患者的临床和病理资料,比较多发性UTUC与单发性UTUC组间的病理TN分期、Grade分级、合并膀胱内肿瘤有无差异(χ2检验)以及两组间术后生存时间是否相同(生存分析采用Kaplan-Meier生存曲线及Wilcoxon检验)。结果:38例患者术后病理诊断为多发性UTUC,与单发性UTUC相比,其预示着更高的病理分级(P=0.031)、分期(P<0.01)、淋巴结转移率(P=0.023)及合并膀胱肿瘤的比例(P=0.002)。术后随访3～302个月,平均随访30个月,发现死亡66例,其中多发性UTUC组死亡13例,术后3年总体生存率为40.0%(P=0.036)。结论:多发性UTUC具有更强的生物学侵袭特性,预后更差,治疗策略应选择根治性肾输尿管切除术,术后需要更严密随访。     

Experience of nephroureterectomy with modified "pluck" method--En bloc removal of kidney and ureter

PURPOSE: Transurethral removal of the ureter in nephroureterectomy has been reported by several centers as being a useful procedure. We also have employed this procedure in selective cases, but we had several problems in this procedure. So we tried the modified pluck nephroureterectomy technique (En bloc removal of kidney and ureter) to improve the procedure. MATERIALS AND METHODS: Since October 1999 to September 2000, we employed this technique in 9 cases with renal pelvic or ureteral tumor, 2 with renal cell carcinoma and 3 with benign diseases. Standard nephrectomy is performed. After transurethral resection of the ureteral meatus, the distal ureter is freed by blind retroperitoneal dissection and plucked out of the bladder in continuity with the kidney. The bladder is drainaged for 6-10 days after surgery. RESULTS: The average time and blood loss during the operation were 247 minutes and 287 ml. No appreciable complications such as retroperitoneal urine leakage or hemorrhage during or after the procedure were observed. CONCLUSIONS: The modified pluck technique is useful because of its easiness and minimal invasiveness.     

Lymph node dissection during the surgical treatment of renal cancer in the modern era

The increasing use of routine CT scan, along with advances in imaging technology, have facilitated the early diagnosis of incidental renal masses. This has resulted in the reduction in the rate of metastatic disease diagnosis. Although surgery remains the mainstay in the treatment of renal tumors, the decreasing incidence of lymph node involvement has created controversy regarding the importance and the ideal extent of lymph node dissection, formerly considered mandatory at the time of radical nephrectomy. In this review, we critically assessed the role of lymph node dissection at the time of radical nephrectomy. To date, randomized trials have failed to show a benefit of lymph node dissection when broadly employed. This is likely due to the low prevalence of lymph node metastasis at the time of presentation, the unpredictable pattern of lymph node metastasis from renal tumors, and the continued downward stage migration of the disease. As a result, lymph node dissection for renal cancer is currently not recommended in the absence of gross lymphadenopathy. In high risk patients, lymph node dissection may be considered, but it remains controversial and more clinical evidence is warranted. Extended lymph node dissection is still recommended in individuals with isolated gross nodal disease or those with lymphadenopathy at the time of cytoreductive surgery prior to systemic therapy. A practical approach is summarized in an algorithm form.     

Clinical review of conservative management of upper urinary tract transitional cell carcinoma

We reviewed 18 patients with transitional cell carcinoma of the renal pelvis and ureter undergoing nephron-sparing surgery between April 1990 and Febrary 2003. The mean age of the patients, 17 males and one female, was 69 years (range 33-88 years). The tumor site was the renal pelvis in 2, ureter in 13 and ureteral orfice in 2. Six of them were imperative cases and 12 were elective. Eight patients underwent endourological treatment and 10 patients open surgery including partial ureterectomy performed on 8 patient. The follow up period was 3 to 104 months (mean 37 months). Among those defined as imperative, the histopathological stage was pT1 in one, pT2 in one, pT3 in 3 and one in pT4. Among the elective cases, the histopathological stage was pTa in 7, pT1 in 2, pT2 in one, pT3 in 2 patients. Of the three defired as elective with tumors cT2 or higher, two died of disease. The 5-year survival rate was 50% and 68% in the imperative and elective cases, respectively. In the patients with tumors pT2 or higher and/or grade 3, the prognosis was poor which suggests the need for intensive therapy including lymph node dissection and/or adjuvant chemotherapy. It is necessary to consider the possibility of selecting nephron-sparing surgery for locally advanced tumors.