Can pT0 stage of prostate cancer be predicted before radical prostatectomy?

OBJECTIVES: To report our experience with biopsy-proven pT0 prostate cancer over the last 10 yr. METHODS: We retrospectively analysed a series of 1950 consecutive patients treated with radical prostatectomy (RP) for clinically localized prostate cancer between 1996 and 2005 at our institution. The patients without residual tumour on RP specimen were defined as pT0 patients. The group of pT0 patients was compared with a control group of 295 patients operated consecutively during the same period. RESULTS: Overall, 11 (0.5%) patients were classified as pT0 on pathologic examination of the RP specimen. There was no pT0 tumour in the control group. Among the pT0 patients, five characteristics were particularly frequent: T1c clinical stage (90.9%), prostate-specific antigen (PSA) or=60 g (100%). All these characteristics were present in 8 of the 11 (72.7%) pT0 patients, while they were present in only 12 of the 295 (4.1%) controls. These parameters, when combined together, had a sensitivity of 72%, a specificity of 96%, and an accuracy of 99% for the prediction of pT0 stage. With a mean follow-up of 30 months after RP, no pT0 patient had clinical or biologic evidence of prostate cancer. CONCLUSIONS: In our experience, the rate of pT0 tumours after RP is 0.5%. The combination of clinical stage, preoperative PSA, number of positive biopsy cores, Gleason score, and prostate weight could help to predict pT0 stage after RP.     

Does a nerve‐sparing technique or potency affect continence after open radical retropubic prostatectomy?

OBJECTIVE

To characterize the effect of preserving the neurovascular bundle (NVB) and of potency on urinary continence after open radical retropubic prostatectomy (ORRP).

PATIENTS AND METHODS

Between October 2000 to September 2005, 1110 consecutive continent men had ORRP by one surgeon. The University of California Los Angeles Prostate Cancer Index was self‐administered at baseline and 3, 6, 12, and 24 months after ORRP. Men were considered continent if they responded that they had total urinary control or had occasional urinary leakage. Men were considered potent if they engaged in sexual intercourse with or without the use of phosphodiesterase inhibitors at least once in the month before or after ORRP. Of the 1110 men, 728 (66%) were potent and continent at baseline. Men undergoing adjuvant hormonal therapy, radiation therapy or chemotherapy were excluded. The potency status was evaluated in 610 men at 24 months after ORRP, and the number of NVBs preserved was recorded at the time of ORRP.

RESULTS

Of men who were potent at baseline and had bilateral vs unilateral nerve sparing, 96% and 99% were continent at 24 months, respectively (P = 0.50). Of the men who were potent and impotent at 24 months, 98% and 96% were continent at 24 months, respectively (P = 0.25). Continence did not depend on whether men regained potency or whether they had a bilateral or a unilateral nerve‐sparing procedure.

CONCLUSION

Our observation that only 60% of men undergoing bilateral nerve‐sparing ORRP regain potency suggests that the NVBs are often inadvertently injured, despite efforts to preserve them. We feel that potency status is the best indicator of the true extent of NVB preservation. That men undergoing bilateral vs unilateral nerve‐sparing procedures, and that potent vs impotent men at 24 months have similar continence rates, provides compelling evidence that nerve‐sparing is not associated with better continence. Based on these findings, NVBs should not be preserved in men with baseline erectile dysfunction, with the expectation of improving continence.     

Can persisting detrusor hyperreflexia be predicted after transurethral prostatectomy for benign prostatic hypertrophy?

Detrusor hyperreflexia (DH) is frequently found in patients with benign prostatic hypertrophy (BPH) and persists in 30-50% of patients after successful removal of bladder neck obstruction by transurethral prostatectomy (TUR-P) or surgical enucleation of the prostate. It would be beneficial for surgeons to be able to identify patients who are at risk of persistent post-operative urinary irritation symptoms and DH. Twenty-three patients who showed DH pre-operatively were included in this study. Of these 23 patients, four had neurogenic bladder because of previous cerebrovascular disease. The other 19 patients were considered to have DH because of BPH. These 19 patients were classified according to their cystometry chart patterns. Pattern 1 was the continual sporadic onset and offset of DH, pattern 2 was a single episode of DH at a bladder volume of <160 mL, and pattern 3 was a single DH episode at a bladder volume >160 mL. Preoperative single-photon emission computed tomography (SPECT) was performed on 14 patients. Cystometric findings at 3 to 6 months after surgery were compared with the pre-operative findings. Four of the six patients with pattern 2 (67%) and all patients with pattern 3 (100%) showed an absence of DH after surgery. In contrast, all five patients with pattern 1 and all four patients with neurogenic bladder showed persistent DH. Compared with pattern 3 patients, pattern 1 patients more frequently complained of urgency before surgery, and their symptoms and uroflowmetry parameters did not improve afterward. Among 14 patients who had pre-operative SPECT, all eight patients with low cerebral blood flow in the frontal region showed persisting DH. Conversely, all six patients with normal SPECT results showed no DH after surgery. When DH occurs repeatedly (pattern 1) or occurs at a bladder volume of <160 mL (pattern 2), there is a greater risk of post-operative irritation symptoms. Abnormal SPECT findings can also predict the post-operative persistence of DH. Combing these two pre-operative examinations allows us to predict better post-operative DH in patients with BPH.     

Positive apical surgical margins after radical retropubic prostatectomy, truth or artefact?

OBJECTIVE: The significance of a positive apical surgical margin following radical retropubic prostatectomy has been the subject of controversy. We examined the hypothesis that a positive apical margin alone is not associated with an increased probability of biochemical relapse. MATERIAL AND METHODS: A total of 162 men underwent radical prostatectomy for clinically organ-confined disease between May 1990 and December 1998. The mean follow-up period was 55 months (minimum 24 months). The mean patient age was 60.8 years. Clinical staging was 67.9% T1 and 32.1% T2. The mean preoperative prostate-specific antigen level was 11.5 ng/ml, and the mean Gleason score was 5.8. RESULTS: Overall, 5/64 patients (7.8%) with negative surgical margins and 42/98 (42.9%) with at least one positive surgical margin had biochemical recurrence (p < 0.001). Seven of 25 patients (28%) with a solitary positive apical margin relapsed. A solitary apical positive margin was associated with a statistically significant higher risk of recurrence versus controls (p < 0.05). CONCLUSION: All patients with a positive surgical margin, including those with a solitary apical margin alone, are at significantly increased risk of biochemical failure.     

Detection of urinary leakage after radical retropubic prostatectomy by contrast enhanced ultrasound – do we still need conventional retrograde cystography?

Study Type – Diagnostic (exploratory cohort)
Level of Evidence 2b INTRODUCTION To prospectively evaluate the accuracy of transvesical contrast‐enhanced ultrasound (CEUS) as an alternative method for the detection of anastomotic leakage after radical retropubic prostatectomy (RRP) in comparison with the current standard method of conventional retrograde cystography (CG). PATIENTS AND METHODS Forty‐three patients underwent RRP for histologically proven localized prostate cancer. The vesico‐urethral anastomosis was evaluated 8 days after RRP by CG and CEUS. Any peri‐anastomotic leakage was assessed and determined in CG and CEUS as follows: no extravasation (EV), small leakage (≤0.5 cm), moderate leakage (>0.5 cm to ≤2 cm), large leakage (>2 cm diameter of EV seen). RESULTS In total, 21 (49%) patients showed a watertight anastomosis. Ten (23%), two (4.7%) and ten (23%) patients showed a small, intermediate and large EV, respectively. In 31 cases (72%) there was 100% agreement of CG and CEUS for detection of no, moderate and large EV, respectively. In nine cases a small and in two cases a moderate EV was categorized as watertight anastomosis by CEUS. Only in one case did CG detect a small EV where a large EV was detected in CEUS. The agreement between both methods was 95% for detecting absence or large leakages. CONCLUSION CEUS is a promising imaging modality that seems to be equivalent to CG for detecting the presence of a large anastomotic leakage that is clinically relevant for postoperative persistence of the indwelling catheter. CEUS could be a cheap and time‐saving alternative to the CG without exposure of the patient to radiation.     

Can robot-assisted laparoscopic radical prostatectomy (RALP) be performed very soon after biopsy?

Purpose

To identify the perioperative and oncological impact of different intervals between biopsy and robot-assisted laparoscopic radical prostatectomy (RALP) for localized prostate cancer.

Methods

All consecutive patients with localized prostate cancer who underwent RALP with primary curative intent in January 2008–July 2014 in a large tertiary hospital were enrolled in this retrospective cohort study. The patients were divided into groups according to whether the biopsy–RALP interval was ≤2, ≤4, ≤6, or >6 weeks. Estimated blood loss and operating room time were surrogates for surgical difficulty. Surgical margin status and continence at the 1 year were surrogates for surgical efficacy. Biochemical recurrence (BCR) was defined as two consecutive postoperative prostate serum antigen values of ≥0.2 ng/ml.

Results

Of the 1446 enrolled patients, the biopsy–RALP interval was ≤2, ≤4, ≤6, and >6 weeks in 145 (10 %), 728 (50.3 %), 1124 (77.7 %), and 322 (22.3 %) patients, respectively. The >6 week group had a significantly longer mean operation time than the ≤2, ≤4, and ≤6 week groups. The groups did not differ significantly in terms of estimated blood loss or surgical margin status. Kaplan–Meier analysis showed that interval did not significantly affect postoperative BCR-free survival. Multivariable Cox proportional hazards model analysis showed that interval duration was not an independent predictor of BCR (≤2 vs. >2 weeks, HR = 0.859, p = 0.474; ≤4 vs. >4 weeks, HR = 1.029, p = 0.842; ≤6 vs. >6 weeks, HR = 0.84, p = 0.368).

Conclusion

Performing RALP within 2, 4, or 6 weeks of biopsy does not appear to adversely influence surgical difficulty or efficacy or oncological outcomes.

     

Can the intraoperative leak test prevent postoperative leakage of esophagojejunal anastomosis after total gastrectomy?

Purpose

Anastomotic failures that cannot be detected during surgery often lead to postoperative leakage. There have been no detailed reports on the intraoperative leak test for esophagojejunal anastomosis. Our purpose was to investigate the utility of routine intraoperative leak testing to prevent postoperative anastomotic leakage after performing esophagojejunostomy.

Methods

We prospectively performed routine air leak tests and reviewed the records of 185 consecutive patients with gastric cancer who underwent open total gastrectomy followed by esophagojejunostomy.

Results

A positive leak test was found for six patients (3.2 %). These patients with positive leak tests were subsequently treated with additional suturing, and they developed no postoperative anastomotic leakage. However, anastomotic leakage occurred in nine patients (4.9 %) with negative leak tests. A multivariate analysis demonstrated that a patient age >75 years and the surgeon’s experience <30 cases were risk factors for anastomotic leakage.

Conclusion

Intraoperative leak testing can detect some physical dehiscence, and additional suturing may prevent anastomotic leakage. However, it cannot prevent all anastomotic leakage caused by other factors, such as the surgeons’ experience and patients’ age.

     

Can sexual bother after radical prostatectomy be predicted preoperatively? Findings from a prospective national study of the relation between sexual function,activity and bother

What's known on the subject? and What does the study add? Sexual function is often impaired after radical prostatectomy resulting in reduced sexual activity and sexual bother. The main focus in the literature concerning sexual adverse effects has been on erectile dysfunction and impairment of sexual function rather than the actual sexual bother it causes, although the sexual bother is most important to the individual patient's quality of life. The relation between these measures, and in particular preoperative prediction of postoperative sexual bother, has only been studied in a limited way and with varying results. Some studies have found good mental health, low levels of preoperative sexual bother, and higher education to be associated with absence of postoperative sexual bother, but another study could not identify any preoperative predictors of postoperative sexual bother. Severe sexual bother after radical prostatectomy was reported by 64% to 95% of patients 3 years after operation, and the prevalence was associated with the level of pretreatment sexual bother and peroperative nerve preservation. On the other hand, others have reported that only 43% of men have sexual bother 2 years after radical prostatectomy. However, none of these studies stratified patients according to their preoperative sexual activity and most of them were American. It has been shown that American findings concerning sexual bother may not always be valid for non‐American patients due to differing sex role expectations, thus warranting the need for more non‐American studies. This study has shown that two‐thirds of patients experienced sexual bother 1 year after radical prostatectomy. We have identified patients with increased risk of experiencing overall sexual bother postoperatively: those who report preoperative sexual bother, those who are sexually active before radical prostatectomy, and those who display neurotic personality traits. Another important finding is that the proportion of patients who experienced bother relevant to having impaired postoperative sexual function was significantly higher among preoperatively sexually active patients than those who had been inactive. This study adds knowledge that patients' preoperative sexual activity, sexual bother and personality should be taken into account to be able to give individualized information about the risk of experiencing sexual bother after radical prostatectomy. Study Type – Therapy (outcomes research) Level of Evidence 2c

OBJECTIVE

• ? To explore the prevalence and prediction of overall sexual bother (SB) 1 year after radical prostatectomy (RP) in relation to preoperative sexual activity and postoperative sexual function.

PATIENTS AND METHODS

• ? This prospective national study included 453 men who completed the sexual domain of the Expanded Prostate Cancer Index Composite before and 1 year after RP.
• ? Preoperatively the patients were classified as sexually active or inactive based on frequency of intercourse during the previous 4 weeks.
• ? The prevalence of 1‐year SB and the proportion of bothered patients with impaired sexual function were calculated.
• ? Preoperative factors significantly associated with postoperative SB on univariate analysis (P < 0.05) were included in multivariate regression analysis, post‐prostatectomy SB being the dependent variable.

RESULTS

• ? The prevalence of SB increased from 18% preoperatively to 66% at 1 year after RP with a larger proportion of change in the active than the inactive group (59% vs 25%).
• ? The proportion of men reporting postoperative SB related to their impaired sexual function 1 year after RP was significantly higher in the preoperatively sexually active group (83%) compared with the inactive group (63%).
• ? In multivariate analysis preoperative SB, sexual activity and nervousness (neuroticism) significantly predicted postoperative SB with odds ratios of 3.71, 2.11 and 1.57, respectively.

CONCLUSION

• ? Sexual activity and SB the last month before prostatectomy and neuroticism identify men at risk of developing SB 1 year postoperatively. Assessment of preoperative sexual activity and SB should be a part of preoperative counselling.

     

When should radiotherapy be used after radical prostatectomy? The RADICALS-RT Trial

Despite two recent trials of the role of early radiotherapy following radical prostatectomy, there remains no consensus as to best practice and clinicians tend to base their decisions around MDT discussion and pathological risk factors. This paper develops the argument for international Intergroup trial, RADICALS-RT, which is now recruiting, and which is our opportunity to resolve this important issue.     

Can haemodialysis-induced hypotension be predicted?

BACKGROUND: During haemodialysis (HD) ultrafiltration may affect the central blood volume to an extent that blood pressure decreases. Thoracic electrical impedance (TI) is applied to monitor the central blood volume and we evaluated if it can be used to predict HD-induced hypotension. METHODS: In 12 hypotensive prone (H) and 13 non-hypotensive prone (N) patients, blood pressure and heart rate were recorded during one dialysis session every 30 min, while TI, thoracic intracellular water (Th(ICW)) and total body impedance (TBI) were followed every 10 min. Hypotension was defined as a decrease in systolic blood pressure (SAP) >/=30 mm Hg or a SAP < 90 mm Hg. RESULTS: All 12 H patients developed hypotension after 190 +/- 10 min (mean +/- SE) as SAP decreased 35 +/- 5 mm Hg, while the 13 N patients maintained blood pressure. TBI increased in all patients and the increase was similar (60 +/- 5 and 56 +/- 6 Omega in H and N patients, respectively). In N patients TI did not change significantly for the first 2 h of HD, while it became elevated by 2.8 +/- 0.6 Omega (1.5 kHz) and 2.3 +/- 0.7 Omega (100 kHz) by the end of the dialysis. In H patients, the increase in TI took place at the onset of HD to reach higher values (by 7.0 +/- 0.5 Omega at 1.5 kHz and 5.9 +/- 0.5 Omega at 100 kHz). Th(ICW) was changed only in H patients (decreased by 7.9 +/- 2.1 Siemens (S) 10(-4), p < 0.05), while HR increased (9 +/- 2 beats/min) in 8 of 12 H patients, while it decreased in 1 patient (by 9 beats/min). CONCLUSIONS: The results suggest that in HD patients hypotension is elicited by a reduction in the central blood volume that affects heart rate and the distribution of red cells within the body. To prevent HD-induced hypotention, the ultrafiltration rate could be reduced when an increase in thoracic impedance approaches 5 Omega, or when an index of intracellular water decreases by 6 10(-4).     

Absence of urethral post-void milking: an additional cause for incontinence after radical prostatectomy?

OBJECTIVE: Urinary incontinence following radical prostatectomy is thought to be mainly due to stress leak as a result of sphincter insufficiency or detrusor dysfunction. However, a number of patients complain of stress-independent urinary leakage following voiding, i. e. a post-micturition dribble, of uncertain origin. In order to establish wether post-micturition dribble is related to altered post-void milking in the urethra, voiding cystourethrograms (VCUGs) were performed before and after radical prostatectomy and correlated with the presence of post-micturition dribble. METHODS: 23 VCUGs were recorded before and 19 VCUGs at 10-15 days following radical prostatectomy. A standard questionnaire regarding urinary symptoms was given to all patients pre- and postoperatively at defined intervals. RESULTS: 12 of 19 patients (63%) had post-void urethral milking prior to surgery, none of these reported post-micturition dribble. 6 of the 7 patients (86%) without post-void urethral milking reported post-micturition dribble. Postoperatively only 1 of 16 patients (6%) had post-void urethral milking. Of the 15 patients without postoperative urethral milking, 13 (87%) reported post-micturition dribble. The decrease in rate of milking and increase in rate of post-micturition dribble from before to after surgery was statistically significant (chi(2) test, p = 0.0001 and p<0.0001, respectively. CONCLUSIONS: These data suggest that post-void milk-out of the urethra is often absent in the early postoperative period after radical prostatectomy and that this is associated with post-micturition dribble. Aside from detrusor and sphincter dysfunction, urethral dysfunction, i.e. the absence of urethral post-void milking, seems to be an additional cause of incontinence following radical prostatectomy.