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Miao H, Hartman M, Verkooijen HM, Taib NA, Wong HS, Subramaniam S, Yip CH, Tan EY, Chan P, Lee SC, Bhoo-Pathy N. Validation of the CancerMath prognostic tool for breast cancer in Southeast Asia. BMC Cancer 2016; 16:820. [PMID: 27769212 PMCID: PMC5073834 DOI: 10.1186/s12885-016-2841-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 10/05/2016] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND CancerMath is a set of web-based prognostic tools which predict nodal status and survival up to 15 years after diagnosis of breast cancer. This study validated its performance in a Southeast Asian setting. METHODS Using Singapore Malaysia Hospital-Based Breast Cancer Registry, clinical information was retrieved from 7064 stage I to III breast cancer patients who were diagnosed between 1990 and 2011 and underwent surgery. Predicted and observed probabilities of positive nodes and survival were compared for each subgroup. Calibration was assessed by plotting observed value against predicted value for each decile of the predicted value. Discrimination was evaluated by area under a receiver operating characteristic curve (AUC) with 95 % confidence interval (CI). RESULTS The median predicted probability of positive lymph nodes is 40.6 % which was lower than the observed 43.6 % (95 % CI, 42.5 %-44.8 %). The calibration plot showed underestimation for most of the groups. The AUC was 0.71 (95 % CI, 0.70-0.72). Cancermath predicted and observed overall survival probabilities were 87.3 % vs 83.4 % at 5 years after diagnosis and 75.3 % vs 70.4 % at 10 years after diagnosis. The difference was smaller for patients from Singapore, patients diagnosed more recently and patients with favorable tumor characteristics. Calibration plot also illustrated overprediction of survival for patients with poor prognosis. The AUC for 5-year and 10-year overall survival was 0.77 (95 % CI: 0.75-0.79) and 0.74 (95 % CI: 0.71-0.76). CONCLUSIONS The discrimination and calibration of CancerMath were modest. The results suggest that clinical application of CancerMath should be limited to patients with better prognostic profile.
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Miner S, Daumler D, Chan P, Lo K, Gupta A, Rosberger Z, Zelkowitz P. Stress, depression, and the desire for social support among male patients in fertility and cancer clinics. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.1080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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103
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Younes G, Gilman A, Tannus S, Son W, Chan P, Buckett W. Reproductive outcomes following surgical sperm retrieval in couples with obstructive azoospermia (OA), non-obstructive azoospermia (NOA) and repeated in vitro fertilization (IVF) failure. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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104
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Kow CY, Chan P, Etherington G, Ton L, Liew S, Cheng AC, Rosenfeld JV. Pan-spinal infection: a case series and review of the literature. JOURNAL OF SPINE SURGERY 2016; 2:202-209. [PMID: 27757433 DOI: 10.21037/jss.2016.08.04] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Panspinal infection usually presents with fever, back pain, neurological deficit, and in advanced cases multi-organ failure and septic shock. The choice of treatment for panspinal infection is challenging because these patients are usually medically unstable with severe neurological compromise. The objective of this study is to review management and long term outcomes for patients with panspinal infection. METHODS A retrospective review of patients with panspinal infection treated in our center over a 5-year period [Jan 2010-Dec 2014] and a review of the current published literatures was undertaken. RESULTS We identified 4 patients with panspinal infection. One case was managed medically due to high perioperative risk, whilst the other three were managed surgically whilst on antibiotic therapy. All 3 cases managed surgically improved neurologically and infection subsided, whereas the patient managed medically did not change neurologically and infection subsided. CONCLUSIONS Patients with panspinal infection should be treated surgically unless the medical risk of surgery or anaesthesia is prohibitive.
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Gilman A, Younes G, Tannus S, Son W, Chan P, Buckett W. Reproductive outcomes in poor-responder patients using surgically retrieved sperm. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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106
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Herrero B, Lusignan M, Son W, Buckett W, Chan P. Effects of sperm quality on the success of intracytoplasmic sperm injection (ICSI) with testicular sperm in couples with recurrent ICSI failure with ejaculated sperm. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bhattacharya I, Manukyan Z, Chan P, Harnisch L, Heatherington A. Making Every Subject Count: A Case Study of Drug Development Path for Medication in a Pediatric Rare Disease. Clin Pharmacol Ther 2016; 100:330-2. [PMID: 27351288 PMCID: PMC5102572 DOI: 10.1002/cpt.417] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/15/2016] [Accepted: 06/22/2016] [Indexed: 11/06/2022]
Abstract
Approximately 50% of rare diseases are evident in children. Fatal disease prognosis and lack of treatments causes 30% of affected children to not live past their fifth birthday. This clear sense of urgency demands innovation and acceleration in drug development. A case study is discussed highlighting the need for data-rich phase I study design, extensive use of modeling and simulation, use of diverse data sources, and input from collaborators to respond to this urgent call.
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Ross I, Melendez J, Goodenberger K, Mejia C, Powderly W, Chan P, Nunn A, Patel R. Awareness and attitudes of prescribing pre-exposure prophylaxis for HIV
prevention among medical providers in Guatemala: Implications for
country-wide implementation. Ann Glob Health 2016. [DOI: 10.1016/j.aogh.2016.04.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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109
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Yousef J, Chan P, Rahdon R. Chronic Synovitis after Open Carpal Tunnel Decompression. J Hand Surg Asian Pac Vol 2016; 21:266-8. [PMID: 27454645 DOI: 10.1142/s2424835516720115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Open carpal tunnel decompression is a common procedure with potential long-term complications such as scar tenderness, pillar pain and neuroma. We present the case of a 65 year-old male with chronic lipomatous hypertrophy of the wrist and chronic flexor tenosynovitis after open carpal tunnel release for its rarity and severity of symptoms that required further surgery.
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Michaels JA, Campbell WB, Rigby KA, Chan P, Beard J, Wood R, Lonsdale R, Sheriff S, Palfreyman S, Thompson J, Allington K, Brazier J, Shackley P, Niblett P, Peters A, Bickerton D. A New Pragmatic Classification System for Varicose Veins. Phlebology 2016. [DOI: 10.1177/026835550101600108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective: An anatomical classification system for varicose veins which has a direct and pragmatic bearing on treatment. Methods: A group of trial participants from the two vascular units involved met to design a system. A consensus on the form and content of the system was reached. This process included forming a set of ideal classification criteria, a literature review of existing classification systems and a pilot study of the proposed system. Results: The identified classification systems were felt to be unsatisfactory for a number of reasons including being difficult to understand and use, requiring special investigations and not linking through to clinical management options. The pilot study demonstrated consensus between clinicians when using our system. Conclusion: A system has been developed that is easy to learn, use and understand. It can be employed in a busy outpatient setting and produces an acceptable degree of agreement regarding the anatomical nature of varicose veins.
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Chiu ZK, Bennett IE, Chan P, Rosenfeld JV. Methamphetamine-related brainstem haemorrhage. J Clin Neurosci 2016; 32:137-9. [PMID: 27345417 DOI: 10.1016/j.jocn.2016.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/27/2016] [Accepted: 03/08/2016] [Indexed: 10/21/2022]
Abstract
We report the case of an otherwise healthy 29-year-old woman who presented with a brainstem haemorrhage following intravenous methamphetamine use. Extensive investigation did not reveal an underlying pathology, and the development of symptoms was temporally related to methamphetamine injection. Although intracerebral haemorrhage secondary to methamphetamine use is well documented, this report describes a haemorrhage within the brainstem which is a rare location. While animal studies have demonstrated the potential of methamphetamines to produce brainstem haemorrhages, there has only been one previous report describing a haemorrhage in this location due to amphetamine use in humans. We conclude with a brief discussion of the clinical features and aetiology of methamphetamine-related stroke.
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Kow CY, Chan P, Etherington G, Rosenfeld JV. Acute traumatic cord injury associated with ossified ligamentum flavum. J Clin Neurosci 2016; 30:165-166. [PMID: 27052256 DOI: 10.1016/j.jocn.2016.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 02/14/2016] [Indexed: 10/22/2022]
Abstract
Ossification of the ligamentum flavum (OLF) is an uncommon condition, which usually occurs amongst people of Asian descent, and most commonly in the thoracic spine region. Whilst often asymptomatic, OLF can cause spinal canal stenosis, with patients presenting with back pain, posterior cord syndrome or myelopathy. We present a rare case of acute spinal cord injury associated with OLF after a kite surfing accident, with the resulting paraplegia partially improved after decompression was performed. The prevalence, presentation and management of OLF are also discussed.
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Bebianno MJ, Sroda S, Gomes T, Chan P, Bonnafe E, Budzinski H, Geret F. Proteomic changes in Corbicula fluminea exposed to wastewater from a psychiatric hospital. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:5046-5055. [PMID: 26423280 DOI: 10.1007/s11356-015-5395-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 09/08/2015] [Indexed: 06/05/2023]
Abstract
The increase use of pharmaceutical compounds in veterinary practice and human population results in the ubiquitous presence of these compounds in aquatic ecosystems. Because pharmaceuticals are highly bioactive, there is concern about their toxicological effects in aquatic organisms. Therefore, the aim of this study was to assess the effects of an effluent from a psychiatric hospital (containing a complex mixture of 25 pharmaceutical compounds from eleven therapeutic classes) on the freshwater clam Corbicula fluminea using a proteomic approach. The exposure of C. fluminea to this complex effluent containing anxiolytics, analgesics, lipid regulators, beta blockers, antidepressants, antiepileptics, antihistamines, antihypertensives, antiplatelets and antiarrhythmics induced protein changes after 1 day of exposure in clam gills and digestive gland more evident in the digestive gland. These changes included increase in the abundance of proteins associated with structural (actin and tubulin), cellular functions (calreticulin, proliferating cell nuclear antigen (PCNA), T complex protein 1 (TCP1)) and metabolism (aldehyde dehydrogenase (ALDH), alcohol dehydrogenase, 6 phosphogluconate dehydrogenase). Results from this study indicate that calreticulin, PCNA, ALDH and alcohol dehydrogenase in the digestive gland and T complex protein 1 (TCP1)) and 6 phosphogluconate dehydrogenase in the gills represent useful biomarkers for the ecotoxicological characterization of psychiatric hospital effluents in this species.
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Herrero MB, García A, Buckett W, Tulandi T, Chan P. Quebec public funding facilitates fertility preservation for male cancer patients. ACTA ACUST UNITED AC 2016; 23:20-5. [PMID: 26966400 DOI: 10.3747/co.23.2793] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Sperm cryopreservation remains the only clinically feasible option to preserve male fertility. The quality of counselling provided by the treating physicians and the cost of sperm cryopreservation can both influence a patient's decision about whether to preserve sperm. On 5 August 2010, the Quebec government introduced provincial coverage of assisted reproductive technologies, with sperm cryopreservation included as a covered service. The aim of the present study was to evaluate whether and how such a program affects the behaviour of cancer patients with respect to sperm cryopreservation. METHODS We analyzed the database derived from male patients undergoing sperm cryopreservation from August 2008 to August 2012 at our centre. The retrieved data included patient age, male infertility or oncologic diagnosis, sperm quality parameters, and details about the number of visits for sperm cryopreservation. RESULTS The number of cancer patients who cryopreserved sperm before and after the policy change did not differ significantly, but a marked increase in the number of non-cancer patients was observed. Further analysis revealed that, after implementation of the public funding program, the total number of sperm cryopreservation sessions per patient increased significantly in cancer patients but not in non-cancer patients. CONCLUSIONS It appears that cancer patients who are willing to freeze sperm are keen to return for more sessions of sperm banking when no fees are associated with the service. Those findings suggest that cost reduction is an important factor for improving delivery of fertility preservation services to male cancer patients.
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Chan P, Yomen K, Turcios J, Richman M. Prescription for antidepressant in reducing future alcohol-related readmission in patients suffering from depression and alcohol use disorder: a retrospective medical record review. SUBSTANCE ABUSE TREATMENT PREVENTION AND POLICY 2015; 10:48. [PMID: 26690941 PMCID: PMC4687098 DOI: 10.1186/s13011-015-0045-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 12/16/2015] [Indexed: 12/13/2022]
Abstract
Background Patients suffering from major depressive disorder are more likely to suffer from alcohol use disorder. The data is inconclusive for the effectiveness of antidepressant treatment of patients suffering from both illnesses in regards to improving sobriety and reducing alcohol-related healthcare expenses such as hospitalizations. The objective of this study is to determine if a new prescription of an antidepressant upon inpatient discharge is associated with a reduction in the number of future acute alcohol-related hospital readmissions to the same institution in patients suffering from major depressive disorder and alcohol-use disorder. Methods A retrospective, medical record review study was conducted at a publicly-supported hospital in Sylmar, CA. A query was performed for adult patients admitted between 1/1/2005–12/31/2013 who had ICD-9 codes for both alcohol-use disorder and depression. Index admission was the first hospitalization in which the patient was currently consuming alcohol and had depression as identified by physician documentation as a problem. Acute alcohol-related admissions were those for alcohol intoxication or withdrawal (indicating current alcohol use). Patients were excluded if they were receiving an antidepressant on index admission, <18 years old, no patient data available, or not currently consuming alcohol; 139 patients met inclusion criteria. Multivariate logistical regression analysis was performed on the primary predictive variable of discharge prescription of an antidepressant along with other independent variables for alcohol readmissions: homelessness, family history of alcohol use disorder, and smoking. Results Discharging patients with a prescription of an antidepressant was not associated with a reduction in acute alcohol-related readmission. There was no difference in acute alcohol-related readmissions between patients discharged with (44.6 %) versus without (47.0 %) a prescription for an antidepressant (p = 0.863). The median number of days between index admission and first readmission for those discharged on an antidepressant was 141 days while those who were not was 112 days (p = 0.284). Conclusion Discharging patients suffering from both alcohol-use disorder and major depressive disorder with a prescription for an antidepressant is not associated with a reduction in future readmissions, nor significantly increase the number of days to readmission. The study does not support the concept of antidepressants in reducing acute alcohol-related readmissions.
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Chu D, Chan P, Wei LM, Cook CC, Gleason TG, Morell VO, Badhwar V. The Effect of Comprehensive Society of Thoracic Surgeons Quality Improvement on Outcomes and Failure to Rescue. Ann Thorac Surg 2015; 100:2147-50; discussion 2150. [DOI: 10.1016/j.athoracsur.2015.05.096] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 05/20/2015] [Accepted: 05/26/2015] [Indexed: 01/14/2023]
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Lam CLK, Law WL, Poon JTC, Chan P, Wong CKH, McGhee SM, Fong DYT. Health-related quality of life in patients with colorectal neoplasm and cost-effectiveness of colorectal cancer screening in Hong Kong. Hong Kong Med J 2015; 21 Suppl 6:4-8. [PMID: 26645874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
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Manku G, Hueso A, Brimo F, Chan P, Gonzalez-Peramato P, Jabado N, Gayden T, Bourgey M, Riazalhosseini Y, Culty M. Changes in the expression profiles of claudins during gonocyte differentiation and in seminomas. Andrology 2015; 4:95-110. [PMID: 26588606 DOI: 10.1111/andr.12122] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 09/23/2015] [Accepted: 09/24/2015] [Indexed: 12/15/2022]
Abstract
Testicular germ cell tumors (TGCTs) are the most common type of cancer in young men and their incidence has been steadily increasing for the past decades. TGCTs and their precursor carcinoma in situ (CIS) are thought to arise from the deficient differentiation of gonocytes, precursors of spermatogonial stem cells. However, the mechanisms relating failed gonocyte differentiation to CIS formation remain unknown. The goal of this study was to uncover genes regulated during gonocyte development that would show abnormal patterns of expression in testicular tumors, as prospective links between failed gonocyte development and TGCT. To identify common gene and protein signatures between gonocytes and seminomas, we first performed gene expression analyses of transitional rat gonocytes, spermatogonia, human normal testicular, and TGCT specimens. Gene expression arrays, pathway analysis, and quantitative real-time PCR analysis identified cell adhesion molecules as a functional gene category including genes downregulated during gonocyte differentiation and highly expressed in seminomas. In particular, the mRNA and protein expressions of claudins 6 and 7 were found to decrease during gonocyte transition to spermatogonia, and to be abnormally elevated in seminomas. The dynamic changes in these genes suggest that they may play important physiological roles during gonocyte development. Moreover, our findings support the idea that TGCTs arise from a disruption of gonocyte differentiation, and position claudins as interesting genes to further study in relation to testicular cancer.
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Bhoo-Pathy N, Verkooijen HM, Tan EY, Miao H, Taib NAM, Brand JS, Dent RA, See MH, Subramaniam S, Chan P, Lee SC, Hartman M, Yip CH. Trends in presentation, management and survival of patients with de novo metastatic breast cancer in a Southeast Asian setting. Sci Rep 2015; 5:16252. [PMID: 26536962 PMCID: PMC4633674 DOI: 10.1038/srep16252] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 10/12/2015] [Indexed: 01/18/2023] Open
Abstract
Up to 25% of breast cancer patients in Asia present with de novo metastatic disease. We examined the survival trends of Asian patients with metastatic breast cancer over fifteen years. The impact of changes in patient’s demography, tumor characteristics, tumor burden, and treatment on survival trend were examined. Patients with de novo metastatic breast cancer from three hospitals in Malaysia and Singapore (N = 856) were grouped by year of diagnosis: 1996–2000, 2001–2005 and 2006–2010. Step-wise multivariable Poisson regression was used to estimate the contribution of above-mentioned factors on the survival trend. Proportions of patients presenting with metastatic breast cancer were 10% in 1996–2000, 7% in 2001–2005, and 9% in 2006–2010. Patients in 2006–2010 were significantly older, appeared to have higher disease burden, and received more chemotherapy, endocrine therapy, and surgery of primary tumor. The three-year relative survival in the above periods were 20·6% (95% CI: 13·9%–28·2%), 28·8% (95% CI: 23·4%–34·2%), and 33·6% (95% CI: 28·8%–38·5%), respectively. Adjustment for treatment considerably attenuated the relative excess risk of mortality in recent years, compared to other factors. Substantial improvements in survival were observed in patients with de novo metastatic breast cancer in this study.
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Chan P, Lutfy K. Molecular Changes in Opioid Addiction: The Role of Adenylyl Cyclase and cAMP/PKA System. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 137:203-27. [PMID: 26810003 DOI: 10.1016/bs.pmbts.2015.10.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
For centuries, opiate analgesics have had a considerable presence in the treatment of moderate to severe pain. While effective in providing analgesia, opiates are notorious in exerting many undesirable adverse reactions. The receptor targets and the intracellular effectors of opioids have largely been identified. Furthermore, much of the mechanisms underlying the development of tolerance, dependence, and withdrawal have been delineated. Thus, there is a focus on developing novel compounds or strategies in mitigating or avoiding the development of tolerance, dependence, and withdrawal. This review focuses on the adenylyl cyclase and cyclic adenosine 3,5-monophosphate (cAMP)/protein kinase A (AC/cAMP/PKA) system as the central player in mediating the acute and chronic effects of opioids. This chapter also reviews the neuronal adaptive changes in the locus coeruleus, amygdala, periaqueductal gray, and ventral tegmental area induced by acute and chronic actions of opioid because these neuronal adaptive changes in these regions may underlie the behavioral changes observed in opiate users and abusers.
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Li S, Miyamoto C, Micaily B, Valakh V, Carpentier P, Sayler E, Chan P. Assessments of Local Bronchopulmonary Functions and Nodule Motion via Dynamic CT and CBCT Scans. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chan P, Stuart W, Hinchliffe R. New Reporting Standards Are Required to Assess the Impact of Vascular Intervention on Patients with Diabetic Foot Ulceration. Eur J Vasc Endovasc Surg 2015; 50:139-40. [DOI: 10.1016/j.ejvs.2015.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 02/22/2015] [Indexed: 11/17/2022]
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Bhoo-Pathy N, Verkooijen HM, Wong FY, Pignol JP, Kwong A, Tan EY, Aishah Taib N, Nei WL, Ho GF, Tan B, Chan P, Lee SC, Hartman M, Yip CH, Dent R. Prognostic role of adjuvant radiotherapy in triple-negative breast cancer: A historical cohort study. Int J Cancer 2015; 137:2504-12. [PMID: 26018878 DOI: 10.1002/ijc.29617] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 05/07/2015] [Accepted: 05/13/2015] [Indexed: 12/22/2022]
Abstract
The value of adjuvant radiotherapy in triple-negative breast cancer (TNBC) is currently debated. We assessed the association between adjuvant radiotherapy and survival in a large cohort of Asian women with TNBC. Women diagnosed with TNBC from 2006 to 2011 in five Asian centers (N = 1,138) were included. Survival between patients receiving mastectomy only, breast-conserving therapy (BCT, lumpectomy and adjuvant radiotherapy) and mastectomy with radiotherapy were compared, and adjusted for demography, tumor characteristics and chemotherapy types. Median age at diagnosis was 53 years (range: 23-96 years). Median tumor size at diagnosis was 2.5 cm and most patients had lymph node-negative disease. The majority of patients received adjuvant chemotherapy (n = 861, 76%) comprising predominantly anthracycline-based regimes. In 775 women with T1-2, N0-1, M0 TNBCs, 5-year relative survival ratio (RSR) was highest in patients undergoing mastectomy only (94.7%, 95% CI: 88.8-98.8%), followed by BCT (90.8%, 95% CI: 85.0-94.7%), and mastectomy with radiotherapy (82.3%, 95% CI: 73.4-88.1%). The adjusted risks of mortality between the three groups were not significantly different. In 363 patients with T3-4, N2-3, M0 TNBCs, BCT was associated with highest 5-year RSR (94.1%, 95% CI: 81.3-99.4%), followed by mastectomy with radiotherapy (62.7%, 95% CI: 54.3-70.1%), and mastectomy only (58.6%, 95% CI: 43.5-71.6%). Following multivariable adjustment, BCT and mastectomy with radiotherapy remained significantly associated with lower mortality risk compared to mastectomy only. Overall, adjuvant radiotherapy was associated with higher survival in women aged <40 years, but not in older women. Adjuvant radiotherapy appears to be independently associated with a survival gain in locally advanced as well as in very young TNBC.
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Tasu JP, Vesselle G, Herpe G, Ferrie JC, Chan P, Boucebci S, Velasco S. Postoperative abdominal bleeding. Diagn Interv Imaging 2015; 96:823-31. [PMID: 26078019 DOI: 10.1016/j.diii.2015.03.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 03/23/2015] [Indexed: 12/14/2022]
Abstract
Postoperative bleeding following abdominal surgery is relatively rare and mainly depends on the type of surgery. Although bleeding is usually controlled by simple local treatment of symptoms, specific treatment including surgery or interventional radiology is sometimes necessary. This article reviews the clinical features that must be recognized depending on the type of surgery and especially focuses on the role of the radiologist in the management of this complication.
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Paes B, Chen J, Mitchell I, Chan P, Li A, Lanctot K. 11: Serious Adverse Events in Canadian Children Receiving Palivizumab for the Prevention of Respiratory Syncytial Virus Infection. Paediatr Child Health 2015. [DOI: 10.1093/pch/20.5.e34b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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