1.National nephrectomy registries: Reviewing the need for population-based data.
John PEARSON ; Timothy WILLIAMSON ; Joseph ISCHIA ; Damien M BOLTON ; Mark FRYDENBERG ; Nathan LAWRENTSCHUK
Korean Journal of Urology 2015;56(9):607-613
Nephrectomy is the cornerstone therapy for renal cell carcinoma (RCC) and continued refinement of the procedure through research may enhance patient outcomes. A national nephrectomy registry may provide the key information needed to assess the procedure at a national level. The aim of this study was to review nephrectomy data available at a population-based level in Australia and to benchmark these data against data from the rest of the world as an examination of the national nephrectomy registry model. A PubMed search identified records pertaining to RCC nephrectomy in Australia. A similar search identified records relating to established nephrectomy registries internationally and other surgical registries of clinical importance. These records were reviewed to address the stated aims of this article. Population-based data within Australia for nephrectomy were lacking. Key issues identified were the difficulty in benchmarking outcomes and no ongoing monitoring of trends. The care centralization debate, which questions whether small-volume centers provide comparable outcomes to high-volume centers, is ongoing. Patterns of adherence and the effectiveness of existing protocols are uncertain. A review of established international registries demonstrated that the registry model can effectively address issues comparable to those identified in the Australian literature. A national nephrectomy registry could address deficiencies identified in a given nation's nephrectomy field. The model is supported by evidence from international examples and will provide the population-based data needed for studies. Scope exists for possible integration with other registries to develop a more encompassing urological or surgical registry. Need remains for further exploration of the feasibility and practicalities of initiating such a registry including a minimum data set, outcome indicators, and auditing of data.
Australia
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Benchmarking
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Carcinoma, Renal Cell/*surgery
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Guideline Adherence
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Humans
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Kidney Neoplasms/*surgery
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Models, Theoretical
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Nephrectomy/*standards/*statistics & numerical data
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Practice Guidelines as Topic
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*Registries
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Treatment Outcome
2.Current role of multiparametric magnetic resonance imaging in the management of prostate cancer.
Nikolas Christopher KATELARIS ; Damien Michael BOLTON ; Mahesha WEERAKOON ; Liam TONER ; Phillip Mark KATELARIS ; Nathan LAWRENTSCHUK
Korean Journal of Urology 2015;56(5):337-345
The purpose of this review was to evaluate the current role of multiparametric magnetic resonance imaging (mp-MRI) in the management of prostate cancer (PC). The diagnosis of PC remains controversial owing to overdetection of indolent disease, which leads to overtreatment and subsequent patient harm. mp-MRI has the potential to equilibrate the imbalance between detection and treatment. The limitation of the data for analysis with this new technology is problematic, however. This issue has been compounded by a paradigm shift in clinical practice aimed at utilizing this modality, which has been rolled out in an ad hoc fashion often with commercial motivation. Despite a growing body of literature, pertinent clinical questions remain. For example, can mp-MRI be calibrated to reliably detect biologically significant disease? As with any new technology, objective evaluation of the clinical applications of mp-MRI is essential. The focus of this review was on the evaluation of mp-MRI of the prostate with respect to clinical utility.
*Disease Management
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Humans
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Magnetic Resonance Imaging/*methods
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Male
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Prostate/*pathology
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Prostate-Specific Antigen/blood
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Prostatectomy
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Prostatic Neoplasms/*diagnosis/pathology/surgery
3.Nephrectomy for a Renal Metastasis of Undiagnosed Hepatocellular Carcinoma Arising From an Orthotopic Liver Transplant Undertaken for Cryptogenic Cirrhosis.
Kevin W K ONG ; Binoy JOSEPH ; Dennis V GYOMBER ; Damien M BOLTON ; Nathan LAWRENTSCHUK
Korean Journal of Urology 2013;54(10):715-717
Urological involvement of hepatocellular carcinoma (HCC) is rare; HCC arising in an orthotopic liver transplant (OLT) is exceptionally rare. Here we report the case of a 70-year-old man who was incidentally found to have metastatic HCC in the right kidney arising from his OLT undertaken for cryptogenic cirrhosis 10 years previously. Adding to the complexity of this case was the lack of an obvious liver primary HCC at the time of the radical nephrectomy, thus making the final diagnosis all but impossible. We believe this report represents the first report of HCC metastasizing to the kidney after OLT and adds to the few reports in the literature of HCC arising in transplanted livers.
Aged
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Carcinoma, Hepatocellular
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Fibrosis
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Humans
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Kidney
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Kidney Neoplasms
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Liver
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Liver Neoplasms
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Liver Transplantation
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Neoplasm Metastasis
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Nephrectomy
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Transplants
4.Incidence of Bladder Cancer in Sri Lanka: Analysis of the Cancer Registry Data and Review of the Incidence of Bladder Cancer in the South Asian Population.
Weranja K B RANASINGHE ; Daswin DE SILVA ; M V C DE SILVA ; Tamra I J RANASINGHE ; Nathan LAWRENTSCHUK ; Damien BOLTON ; Raj PERSAD
Korean Journal of Urology 2012;53(5):304-309
PURPOSE: To investigate the incidence of bladder cancer (BC) in Sri Lanka and to compare risk factors and outcomes with those of other South Asian nations and South Asian migrants to the United Kingdom (UK) and the United States (US). MATERIALS AND METHODS: The incidence of BC in Sri Lanka was examined by using two separate cancer registry databases over a 5-year period. Smoking rates were compiled by using a population-based survey from 2001 to 2009 and the relative risk was calculated by using published data. RESULTS: A total of 637 new cases of BC were diagnosed over the 5-year period. Sri Lankan BC incidence increased from 1985 but remained low (1.36 and 0.3 per 100,000 in males and females) and was similar to the incidence in other South Asian countries. The incidence was lower, however, than in migrant populations in the US and the UK. In densely populated districts of Sri Lanka, these rates almost doubled. Urothelial carcinoma accounted for 72%. The prevalence of male smokers in Sri Lanka was 39%, whereas Pakistan had higher smoking rates with a 6-fold increase in BC. CONCLUSIONS: Sri Lankan BC incidence was low, similar to other South Asian countries (apart from Pakistan), but the actual incidence is likely higher than the cancer registry rates. Smoking is likely to be the main risk factor for BC. Possible under-reporting in rural areas could account for the low rates of BC in Sri Lanka. Any genetic or environmental protective effects of BC in South Asians seem to be lost on migration to the UK or the US and with higher levels of smoking, as seen in Pakistan.
Asian Continental Ancestry Group
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Great Britain
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Humans
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Incidence
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Male
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Pakistan
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Prevalence
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Risk Factors
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Smoke
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Smoking
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Sri Lanka
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Transients and Migrants
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United States
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Urinary Bladder
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Urinary Bladder Neoplasms
5.The use of tissue fiducial markers in improving the accuracy of post-prostatectomy radiotherapy
Michael CHAO ; Huong HO ; Daryl Lim JOON ; Yee CHAN ; Sandra SPENCER ; Michael NG ; Jason WASIAK ; Nathan LAWRENTSCHUK ; Kevin MCMILLAN ; Shomik SENGUPTA ; Alwin TAN ; George KOUFOGIANNIS ; Margaret COKELEK ; Farshad FOROUDI ; Tristan Scott KHONG ; Damien BOLTON
Radiation Oncology Journal 2019;37(1):43-50
PURPOSE: The aim of this retrospective study was to investigate the use of a radiopaque tissue fiducial marker (TFM) in the treatment of prostate cancer patients who undergo post-prostatectomy radiotherapy (PPRT). TFM safety, its role and benefit in quantifying the set-up uncertainties in patients undergoing PPRT image-guided radiotherapy were assessed. MATERIALS AND METHODS: A total of 45 consecutive PPRT patients underwent transperineal implantation of TFM at the level of vesicourethral anastomosis in the retrovesical tissue prior to intensity-modulated radiotherapy. Prostate bed motion was calculated by measuring the position of the TFM relative to the pelvic bony anatomy on daily cone-beam computed tomography. The stability and visibility of the TFM were assessed in the initial 10 patients. RESULTS: No postoperative complications were recorded. A total of 3,500 images were analysed. The calculated prostate bed motion for bony landmark matching relative to TFM were 2.25 mm in the left-right, 5.89 mm in the superior-inferior, and 6.59 mm in the anterior-posterior directions. A significant 36% reduction in the mean volume of rectum receiving 70 Gy (rV₇₀) was achieved for a uniform planning target volume (PTV) margin of 7 mm compared with the Australian and New Zealand Faculty of Radiation Oncology Genito-Urinary Group recommended PTV margin of 10 mm. CONCLUSION: The use of TFM was safe and can potentially eliminate set-up errors associated with bony landmark matching, thereby allowing for tighter PTV margins and a consequent favourable reduction in dose delivered to the bladder and rectum, with potential improvements in toxicities.
Clothing
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Cone-Beam Computed Tomography
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Fiducial Markers
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Humans
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New Zealand
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Postoperative Complications
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Prostate
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Prostatectomy
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Prostatic Neoplasms
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Radiation Oncology
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Radiotherapy
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Radiotherapy, Image-Guided
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Radiotherapy, Intensity-Modulated
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Rectum
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Retrospective Studies
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Urinary Bladder