Transperineal prostate mapping may provide an effective method to risk stratify men with localized prostate cancer. The definitions that we present require prospective validation.
OBJECTIVE
To describe and assess an enhanced recovery protocol (ERP) for the peri‐operative management of patients undergoing radical cystectomy (RC), which was started at our institution on 1 October 2005, as RC is associated with increased morbidity and longer inpatient stays than other major urological procedures.
PATIENTS AND METHODS
An ERP was introduced in our institution that focused on reduced bowel preparation, and standardized feeding and analgesic regimens. In all, 112 consecutive patients were compared, i.e. 56 before implementing the ERP and 56 since introducing the ERP. The primary outcome measures were duration of total inpatient stay and interval from surgery to discharge, and the morbidity and mortality. Data were analysed retrospectively from cancer network and hospital records.
RESULTS
The demographics of the two groups showed no significant difference in age, gender distribution, American Society of Anesthesiologists grade, or type of urinary diversion. Re‐admission, mortality and morbidity rates showed no statistically significant difference between the groups. The median (interquartile range) duration of hospital stay was 17 (15–23) days in the no‐ERP group, and 13 (11–17) days in the ERP group (significantly different, P < 0.001, Wilcoxon rank‐sum test). The median duration of recovery after RC was 15 (13–21) days in the no‐ERP group and 12 (10–15) days in the ERP group (significantly different, P = 0.001, Wilcoxon rank‐sum test).
CONCLUSION
The introduction of an ERP was associated with significantly reduced hospital stay, with no deleterious effect on morbidity or mortality.
Results of this study indicate that MP MR imaging has a high negative predictive value to rule out clinically significant prostate cancer and may potentially have clinical use in diagnostic pathways of men at risk.
ObjectiveTo determine the optimal drug and light dose for prostate ablation using WST11 (TOOKADâ Soluble) for vasculartargeted photodynamic (VTP) therapy in men with low-risk prostate cancer.
Patients and MethodsIn all, 42 men with low-risk prostate cancer were enrolled in the study but two who underwent anaesthesia for the procedure did not receive the drug or light dose. Thus, 40 men received a single dose of 2, 4 or 6 mg/kg WST11 activated by 200 J/cm light at 753 nm. WST11 was given as a 10-min intravenous infusion. The light dose was delivered using cylindrical diffusing fibres within hollow plastic needles positioned in the prostate using transrectal ultrasonography (TRUS) guidance and a brachytherapy template. Magnetic resonance imaging (MRI) was used to assess treatment effect at 7 days, with assessment of urinary function (International Prostate Symptom Score [IPSS]), sexual function (International Index of Erectile Function [IIEF]) and adverse events at 7 days, 1, 3 and 6 months after VTP. TRUS-guided biopsies were taken at 6 months.
ResultsIn all, 39 of the 40 treated men completed the follow-up. The Day-7 MRI showed maximal treatment effect (95% of the planned treatment volume) in men who had a WST11 dose of 4 mg/kg, light dose of 200 J/cm and light density index (LDI) of >1. In the 12 men treated with these parameters, the negative biopsy rate was 10/12 (83%) at 6 months, compared with 10/26 (45%) for the men who had either a different drug dose (10 men) or an LDI of <1 (16). Transient urinary symptoms were seen in most of the men, with no significant difference in IPSS score between baseline and 6 months after VTP. IIEF scores were not significantly different between baseline and 6 months after VTP.
ConclusionTreatment with 4 mg/kg TOOKAD Soluble activated by 753 nm light at a dose of 200 J/cm and an LDI of >1 resulted in treatment effect in 95% of the planned treatment volume and a negative biopsy rate at 6 months of 10/12 men (83%).
Study Type – Diagnostic (validating cohort)
Level of Evidence 1b
What's known on the subject? and What does the study add?
Transrectal ultrasonography (TRUS)‐guided biopsies can miss prostate cancer and misclassify risk in a diagnostic setting; the exact extent to which it does so in a repeat biopsy strategy in men with low–intermediate risk prostate cancer is unknown.
A simulation study of different biopsy strategies showed that repeat 12‐core TRUS biopsy performs poorly. Adding anterior sampling improves on this but the highest accuracy is achieved using transperineal template prostate mapping using a 5 mm sampling frame.
OBJECTIVE
To determine the effectiveness of two sampling strategies; repeat transrectal ultrasonography (TRUS)‐biopsy and transperineal template prostate mapping (TPM) to detect and exclude lesions of ≥0.2 mL or ≥0.5 mL using computer simulation on reconstructed three‐dimensional (3‐D) computer models of radical whole‐mount specimens.
PATIENTS AND METHODS
Computer simulation on reconstructed 3‐D computer models of radical whole‐mount specimens was used to evaluate the performance characteristics of repeat TRUS‐biopsy and TPM to detect and exclude lesions of ≥0.2 mL or ≥0.5 mL.
In all, 107 consecutive cases were analysed (1999–2001) with simulations repeated 500 times for each biopsy strategy.
TPM and five different TRUS‐biopsy strategies were simulated; the latter involved a standard 12‐core sampling and incorporated variable amounts of error, as well as the addition of anterior cores.
Sensitivity, specificity, negative and positive predictive values for detection of lesions with a volume of ≥0.2 mL or ≥0.5 mL were calculated.
RESULTS
The mean (sd) age and PSA concentration were 61 (6.4) years and 8.5 (5.9) ng/mL, respectively.In all, 53% (57/107) had low–intermediate risk disease.
In all, 665 foci were reconstructed; there were 149 foci ≥0.2 mL and 97 ≥ 0.5 mL in the full cohort and 68 ≥ 0.2 mL and 43 ≥ 0.5 mL in the low–intermediate risk group.
Overall, TPM accuracy (area under the receiver operating curve, AUC) was ≈0.90 compared with AUC 0.70–0.80 for TRUS‐biopsy.
In addition, at best, TRUS‐biopsy missed 30–40% of lesions of ≥0.2 mL and ≥0.5 mL whilst TPM missed 5% of such lesions.
CONCLUSION
TPM under simulation conditions appears the most effective re‐classification strategy, although augmented TRUS‐biopsy techniques are better than standard TRUS‐biopsy.
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