Beat Roth

Super Extended Versus Extended Pelvic Lymph Node Dissection in Patients Undergoing Radical Cystectomy for Bladder Cancer: A Comparative Study

PURPOSE There is evidence from retrospective studies that radical cystectomy with extended pelvic lymph node dissection provides better staging and outcomes than limited lymph node dissection. However, the optimal limits of extended lymph node dissection remain unclear. We compared oncological outcomes at 2 cystectomy centers where 2 different extended lymph node dissection templates are practiced to determine whether removing lymphatic tissue up to the inferior mesenteric artery confers an additional survival advantage. MATERIALS AND METHODS Patients undergoing radical cystectomy and extended lymph node dissection with curative intent from 1985 to 2005 were included in analysis if they met certain criteria, including clinically organ confined urothelial bladder carcinoma (cN0M0), pathological stage pT2-pT3, negative surgical margins and no neoadjuvant therapy. Survival and recurrence data were analyzed. RESULTS Demographic data and pathological subgroup distribution (pT2 and pT3) were similar in the 554 University of Southern California and 405 University of Bern patients. University of Southern California patients had higher median number of lymph nodes removed than University of Bern patients (38 vs 22, p <0.0001) and a higher incidence of lymph node metastasis (35% vs 28%, p = 0.02). However, the University of Southern California and University of Bern groups had similar 5-year recurrence-free survival for pT2pN0-2 (57% vs 67%) and pT3pN0-2 (32% vs 34%) disease (p = 0.55 and 0.44, respectively). The overall recurrence rate was equal at the 2 institutions (38%). CONCLUSIONS Meticulous extended lymph node dissection up to the mid-upper third of the common iliac vessels appears to provide survival and recurrence outcomes similar to those of a super extended template up to the inferior mesenteric artery. Complete skeletonization in the extended lymph node dissection template is more important than nodal yield. This does not exclude the possibility that certain patient subgroups with suspicious nodes or after neoadjuvant chemotherapy may benefit from more extensive lymph node dissection.

A New Multimodality Technique Accurately Maps the Primary Lymphatic Landing Sites of the Bladder

BACKGROUND Pathoanatomic studies have failed to map accurately the primary lymphatic landing sites of the urinary bladder. OBJECTIVE To use single-photon emission computed tomography (SPECT) combined with computed tomography (CT) plus intraoperative gamma probe verification to map the primary lymphatic landing sites of the bladder. DESIGN, SETTING, AND PARTICIPANTS Clinical trial of 60 consecutive cystectomy patients at a single centre. INTERVENTION Flexible cystoscopy-guided injection of technetium nanocolloid into one of six non-tumour-bearing sites of the bladder for preoperative detection of radioactive lymph nodes (LNs) with SPECT/CT followed by intraoperative verification with a gamma probe. Backup extended pelvic LN dissection (PLND) for ex vivo detection of missed LNs. MEASUREMENTS Three-dimensional projection of each LN site. RESULTS AND LIMITATIONS A median of 4 (range: 1-14) radioactive LNs were detected per site and patient. Ninety-two percent of all LNs were found distal and caudal to where the ureter crosses the common iliac arteries. Eight percent were found proximal to the uretero-iliac crossing, none without simultaneous detection of additional radioactive LNs within the endopelvic region. Extended PLND resected 92% of all primary lymphatic landing sites; limited PLND resected only 52%. A few LNs may have been missed despite preoperative SPECT/CT, intraoperative gamma probe verification, and extended backup PLND. CONCLUSIONS Multimodality SPECT/CT plus intraoperative gamma probe show the template of the bladders primary lymphatic landing sites to be larger than is often thought. PLND limited to the ventral portion of the external iliac vessels and obturator fossa removes only about 50% of all primary lymphatic landing sites, whereas extended PLND along the major pelvic vessels, including the internal iliac, external iliac, obturator, and common iliac region up to the uretero-iliac crossing, removes about 90%.

Noninvasive Assessment of Acute Ureteral Obstruction with Diffusion-weighted MR Imaging: A Prospective Study

PURPOSE To prospectively assess the potential of noninvasive diffusion-weighted magnetic resonance (MR) imaging to depict changes in microperfusion and diffusion in patients with acute unilateral ureteral obstruction. MATERIALS AND METHODS The local ethics committee approved the study protocol. Informed consent was obtained. Diffusion-weighted MR imaging was performed in 21 patients (two women, 19 men; mean age, 43 years +/- 10 [standard deviation]) with acute unilateral ureteral obstruction due to a calculus diagnosed at unenhanced computed tomography. A control group (one woman, 15 men; mean age, 44 years +/- 12) underwent the same MR protocol. Standard processing yielded an apparent diffusion coefficient (ADC) ADCT; the separation of microperfusion and diffusion contributions yielded the perfusion fraction FP and the pure diffusion coefficient ADCD. ADCT, ADCD, and FP were compared between obstructed and contralateral unobstructed kidneys and with control values. For statistical analysis, nonparametric rank tests were used. A P value of less than .05 was considered significant. RESULTS No significant differences were observed between the ADCT of the medulla or cortex of the obstructed and unobstructed kidneys. Compared with control kidneys, only medullary ADCT was slightly increased in the obstructed kidney (P < .04). However, the ADCD in the medulla of the obstructed and unobstructed kidneys was significantly higher than that in control subjects (201 x 10(-5) mm2/sec +/- 16 and 199 x 10(-5) mm2/sec +/- 20 vs 189 x 10(-5) mm2/sec +/- 12; P < .008 and P < .03, respectively). FP of the cortex of the obstructed kidney was significantly lower than that in the unobstructed kidney (20.2% +/- 4.8 vs 24.0% +/- 5.8; P < .002); FP of the medulla was slightly lower in the obstructed kidney than in the unobstructed kidney (18.3% +/- 5.9 vs 20.7% +/- 6.4; P = .05). CONCLUSION Diffusion-weighted MR imaging allows noninvasive detection of changes in renal perfusion and diffusion during acute unilateral ureteral obstruction, as exemplified in patients with a ureteral calculus.

Parenteral Nutrition Does Not Improve Postoperative Recovery from Radical Cystectomy: Results of a Prospective Randomised Trial

BACKGROUND After radical cystectomy, patients are in a catabolic state because of postoperative stress response, extensive wound healing, and ileus. OBJECTIVE To evaluate whether recovery can be improved with total parenteral nutrition (TPN) in patients following extended pelvic lymph node dissection (ePLND), cystectomy, and urinary diversion (UD). DESIGN, SETTING, AND PARTICIPANTS We conducted a prospective, randomised, single-centre study of 157 consecutive cystectomy patients. INTERVENTION Seventy-four patients (group A) received TPN during the first 5 postoperative days, with additional oral intake ad libitum. Eighty-three patients (group B) received oral nutrition alone. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS The primary outcome was the occurrence of postoperative complications. Secondary outcomes were time to recovery of bowel function, biochemical nutritional (serum albumin, serum prealbumin, serum total protein) and inflammatory (C-reactive protein) parameters, length of hospital stay, and costs attributed to the TPN. The Pearson χ(2) test was used for dichotomous variables; the Wilcoxon rank sum test was used for continuous variables. RESULTS AND LIMITATIONS Postoperative complications occurred in 51 patients (69%) in group A and in 41 patients (49%) in group B (p=0.013), a difference resulting from group A having more infectious complications than group B (32% vs 11%; p=0.001). Serum prealbumin and serum total protein were significantly lower in group B on postoperative day 7 but not on postoperative day 12. Time to gastrointestinal recovery and length of hospital stay did not differ between the two groups. The costs for TPN were €614 per patient. A potential limitation is the use of a glucose-based parenteral nutrition without lipids. CONCLUSIONS Postoperative TPN is associated with a higher incidence of complications, mainly infections, and higher costs following ePLND, cystectomy, and UD versus oral nutrition alone.

Unaltered oncological outcomes of radical cystectomy with extended lymphadenectomy over three decades

To evaluate oncological outcome trends over the last three decades in patients after radical cystectomy (RC) and extended pelvic lymph node (LN) dissection.

Benign Prostatic Obstruction and Parkinson's Disease— Should Transurethral Resection of the Prostate be Avoided?

PURPOSE According to the literature transurethral resection of the prostate in patients with Parkinsons disease has an increased risk of postoperative urinary incontinence. However, this conclusion might have been reached because some patients with multiple system atrophy incorrectly diagnosed as Parkinsons disease were included in these reports. Therefore, we investigated the outcome of transurethral prostate resection in patients with a secure neurological diagnosis of Parkinsons disease. MATERIALS AND METHODS A total of 23 patients with Parkinsons disease who underwent transurethral prostate resection for benign prostatic obstruction were evaluated retrospectively. Subsequent neurological developments in patients were followed, ensuring that those with multiple system atrophy had not been included in analysis. RESULTS At transurethral prostate resection median patient age was 73 years, median duration of Parkinsons disease before the resection was 3 years, and median Hoehn and Yahr scale was 2. Of the 14 patients with a preoperative indwelling urinary catheter transurethral prostate resection restored voiding in 9 (64%) and only 5 (36%) required catheterization postoperatively. Of the 10 patients with preoperative urge urinary incontinence, continence was restored in 5 and improved in 3 following transurethral prostate resection. There were no cases of de novo urinary incontinence after transurethral prostate resection. At a median postoperative followup of 3 years transurethral prostate resection was successful in 16 of the 23 patients (70%). CONCLUSIONS Transurethral prostate resection for benign prostatic obstruction in patients with Parkinsons disease may be successful in up to 70% and the risk of de novo urinary incontinence seems minimal. Thus, Parkinsons disease should no longer be considered a contraindication for transurethral prostate resection provided that preoperative investigations including urodynamic assessment indicate prostatic bladder outlet obstruction.

A Prospective Randomised Trial Comparing the Modified HM3 with the MODULITH® SLX-F2 Lithotripter

BACKGROUND The relative efficacy of first- versus last-generation lithotripters is unknown. OBJECTIVES To compare the clinical effectiveness and complications of the modified Dornier HM3 lithotripter (Dornier MedTech, Wessling, Germany) to the MODULITH(®) SLX-F2 lithotripter (Storz Medical AG, Tägerwilen, Switzerland) for extracorporeal shock wave lithotripsy (ESWL). DESIGN, SETTING AND PARTICIPANTS We conducted a prospective, randomised, single-institution trial that included elective and emergency patients. INTERVENTIONS Shock wave treatments were performed under anaesthesia. MEASUREMENTS Stone disintegration, residual fragments, collecting system dilatation, colic pain, and possible kidney haematoma were evaluated 1 d and 3 mo after ESWL. Complications, ESWL retreatments, and adjuvant procedures were documented. RESULTS AND LIMITATIONS Patients treated with the HM3 lithotripter (n=405) required fewer shock waves and shorter fluoroscopy times than patients treated with the MODULITH(®) SLX-F2 lithotripter (n=415). For solitary kidney stones, the HM3 lithotripter produced a slightly higher stone-free rate (p=0.06) on day 1; stone-free rates were not significantly different at 3 mo (HM3: 74% vs MODULITH(®) SLX-F2: 67%; p=0.36). For solitary ureteral stones, the stone-free rate was higher at 3 mo with the HM3 lithotripter (HM3: 90% vs MODULITH(®) SLX-F2: 81%; p=0.05). For solitary lower calyx stones, stone-free rates were equal at 3 mo (63%). In patients with multiple stones, the HM3 lithotripters stone-free rate was higher at 3 mo (HM3: 64% vs MODULITH(®) SLX-F2: 44%; p=0.003). Overall, HM3 lithotripter led to fewer secondary treatments (HM3: 11% vs MODULITH(®) SLX-F2: 19%; p=0.001) and fewer kidney haematomas (HM3: 1% vs. MODULITH(®) SLX-F2: 3%; p=0.02). CONCLUSIONS The modified HM3 lithotripter required fewer shock waves and shorter fluoroscopy times, showed higher stone-free rates for solitary ureteral stones and multiple stones, and led to fewer kidney haematomas and fewer secondary treatments than the MODULITH(®) SLX-F2 lithotripter. In patients with a solitary kidney and solitary lower calyx stones, results were comparable for both lithotripters.

Ureteroileal Strictures After Urinary Diversion with an Ileal Segment—Is There a Place for Endourological Treatment at All?

PURPOSE We compared the long-term results of minimally invasive endourological intervention and open surgical revision in patients with a nonmalignant ureteroileal stricture. MATERIALS AND METHODS We retrospectively evaluated the records of 74 patients (85 renal units) treated for unilateral or bilateral nonmalignant ureteroileal strictures. Overall, 96 endourological and 35 open surgical procedures were performed. Balloon dilatation and Acucise® or Ho:YAG laser endoureterotomy were used as minimally invasive endourological interventions. Open surgical revision with stricture resection and open ureteroileal end-to-side-reanastomosis was the alternate therapy. Treatment success was defined as radiological normalization or improvement of upper urinary tract morphology combined with absent flank pain, infection, ureteral stents or percutaneous nephrostomies. RESULTS Median followup was 29 months (range 2 to 177). The overall success rate was 26% (25 of 96 cases) for endourological intervention vs 91% (32 of 35) for open surgical revision (p <0.001). Subgroup analysis showed a significant difference in the success rate of minimally invasive endourological interventions vs open surgical revision for strictures greater than 1 cm (3 of 52 cases or 6% vs 19 of 22 or 86%, p <0.001). The success rate of endourological and open surgical procedures for strictures 1 cm or less was 50% (22 of 44 cases) and 100% (13 of 13), respectively. After adjusting for multiple preoperative stricture characteristics, only stricture length was strongly and inversely associated with a successful outcome (p <0.001). CONCLUSIONS Open surgical revision produces better results than minimally invasive endourological intervention for ureteroileal strictures, particularly those greater than 1 cm. The success rate of endourological intervention is acceptable only for ureteroileal strictures 1 cm or less. Therefore, ureteroileal strictures greater than 1 cm should be primarily managed by open surgical revision.

Readaptation of the Peritoneum Following Extended Pelvic Lymphadenectomy and Cystectomy Has a Significant Beneficial Impact on Early Postoperative Recovery and Complications: Results of a Prospective Randomized Trial

BACKGROUND Prolonged postoperative pain and delayed intestinal transit are frequent problems following extended pelvic lymph-node dissection (PLND) and cystectomy. OBJECTIVE To evaluate the impact of bilateral readaptation of the dorsolateral peritoneal layer on postoperative pain, gastrointestinal recovery, and complications following extended PLND and cystectomy. DESIGN, SETTING, AND PARTICIPANTS Randomized, single-blinded, single-center study of 200 consecutive cystectomy patients. INTERVENTION In group A (n=100), lateral peritoneal flaps ventral to the external iliac vessels were bilaterally rotated over the iliac vessels down to the distal obturator fossa and medially fixed to the pararectal peritoneal layer following extended PLND and cystectomy. In group B (n=100), the peritoneal layer was not readapted. MEASUREMENTS Pain according to the visual analog scale (VAS), amount of peridural anesthetics needed, and gastrointestinal activity were assessed on postoperative days 1, 3, and 7. Complications occurring within 30 d following surgery were documented. RESULTS AND LIMITATIONS Readaptation of the dorsolateral peritoneal layer resulted in a significant decrease in pain (p<0.01) with concurrent significantly reduced need for peridural anesthetics (p<0.01). Flatulence and first passage of stool as signs of intestinal transit were noted earlier in group A than in group B. Gastrostomy tube and peridural catheter could be removed 1 d earlier in group A than in group B (postoperative days 7 vs 8 and 6 vs 7, respectively). Group A (30%) had fewer complications than group B (56%; p<0.001). CONCLUSIONS Readaptation of the dorsolateral peritoneal layer after extended PLND and cystectomy resulted in significantly less postoperative pain, earlier recovery of bowel function, and fewer complications in the early postoperative period.

Outcomes of radical cystectomy with extended lymphadenectomy alone in patients with lymph node-positive bladder cancer who are unfit for or who decline adjuvant chemotherapy

To analyse the long‐term outcomes of patients with lymph node (LN)‐positive bladder cancer, who did not receive any adjuvant therapy after radical cystectomy (RC) and extended pelvic lymph node dissection (ePLND).