2.Occurrence of a lymphocele following renal transplantation.
Allen SIM ; Lay Guat NG ; Christopher CHENG
Singapore medical journal 2013;54(5):259-262
INTRODUCTIONThe incidence of lymphoceles - lymphatic collections around a transplanted kidney - can be as high as 20%. We aimed to review the presentation, treatment and outcome of patients with lymphoceles.
METHODSWe reviewed a prospective database of 154 patients who underwent renal transplantation at our hospital from January 2005 to November 2008.
RESULTSThe mean age of the patients in our cohort was 46 (range 34-58) years. The incidence of lymphoceles in our series was 5.8% (n = 9). The median onset was 19 (range 6-28) days post-transplantation, while the median size of the lymphoceles was 5 (range 1.5-8) cm. Lymphoceles were most commonly found at the lower pole of the transplanted kidney. Eight patients with lymphoceles had received cadaveric transplants. While a majority of these patients did not have hydronephrosis on presentation, four had markedly elevated creatinine. Of the nine patients with lymphoceles, six were on macrolides (tacrolimus, sirolimus or everolimus), two were successfully managed conservatively, three were managed percutaneously and four required surgical drainage via either laparoscopic marsupialisation (n = 1) or open drainage (n = 3). There was no graft loss.
CONCLUSIONIt remains unknown whether the choice of immunosuppressants increases the risk of lymphocele formation. Intervention is necessary in the case of impaired drainage of the pelvicalyceal system in these patients. Minimally invasive intervention, while effective in treating lymphoceles, does not provide definitive treatment. Surgical intervention should be considered early for the treatment of post-transplantation patients with lymphoceles, so as to shorten hospital stay and prevent further complications.
Adult ; Databases, Factual ; Drainage ; adverse effects ; Female ; Humans ; Immunosuppressive Agents ; therapeutic use ; Incidence ; Kidney Transplantation ; methods ; Laparoscopy ; Lymphocele ; complications ; diagnosis ; Male ; Middle Aged ; Postoperative Complications ; Prospective Studies ; Renal Insufficiency ; complications ; therapy ; Treatment Outcome
3.Prevailing attitudes towards cancer: a multicultural survey in a tertiary outpatient setting.
Kae Jack TAY ; Nor Azhari Mohamad ZAM ; Christopher W S CHENG
Annals of the Academy of Medicine, Singapore 2013;42(10):492-498
INTRODUCTIONCultural influences affect attitudes towards cancer screening, diagnosis, treatment and palliation. The objective of this study is to survey the prevailing attitudes towards cancer in a multicultural tertiary outpatient setting.
MATERIALS AND METHODSThis is a cross-sectional study of 300 respondents visiting the Singapore General Hospital (SGH) Urology Centre over a period of 1 month. A questionnaire was developed assessing responses to various facets of cancer management and administered in English, Chinese or Malay to every 10th person visiting the centre. Institutional review board approval was obtained.
RESULTSOf 300 respondents, 57% were Chinese, 17% Malay, 19% Indian, and 7% others. Mean age was 54.3 years. Most respondents were male (68%) and had up to secondary education (56%). Most Chinese were Taoist/Buddhist (42%) or Christian/ Catholic (36%) while Indians were largely Hindu (47%) or Muslim (27%). Thirty-seven percent of respondents had ever participated in cancer screening. Eighty-nine percent of respondents wanted to be the first to know if they had cancer, and 76% found it unacceptable if the diagnosis of cancer was withheld from them. These were irrespective of race, religion or other factors. Forty percent of respondents believed that being diagnosed with cancer was a matter of fate. Sixty percent of respondents would undergo treatment with 50% chance of cure, even if it involved major surgery and adjuvant therapy. Eighty-one percent believed in efficacy of at least 1 form of alternative treatment. Seventy-one percent of respondents preferred to die at home and this was most marked among Malay respondents (90.4%).
CONCLUSIONThis better understanding of patient attitudes will allow us to help patients balance wishes for autonomy versus family involvement in dealing with cancer. This will help us achieve a more holistic and patient-centred approach to cancer care.
Cross-Sectional Studies ; Health Knowledge, Attitudes, Practice ; Humans ; Neoplasms ; Outpatients ; Surveys and Questionnaires
4.Shearwave-based ultrasound viscoelasticity measurement system for evaluation of liver fibrosis.
Tan WEI ; Han XIAODONG ; Cheng GANG ; Christopher HAZARD
Chinese Journal of Medical Instrumentation 2010;34(5):330-334
This paper describes a liver elasticity and viscosity measurement system based on existing medical ultrasound platforms. This system relies on acoustic radiation force to invoke transient response on soft tissue, and employs displacement estimation algorithms to detect the propagation of shear wave. The research proves that the velocity of the shear wave may serve as a reliable estimation of the Young's modulus and viscosity coefficient of the liver tissue, and existing commercial products may be easily adapted to support this technique without extra hardware cost.
Algorithms
;
Animals
;
Elastic Modulus
;
Elasticity Imaging Techniques
;
instrumentation
;
methods
;
Liver Cirrhosis
;
diagnostic imaging
;
Viscosity
5.Management of thrombotic thrombocytopenic purpura in metastatic prostate cancer with only endocrine therapy.
Ravindran KANESVARAN ; Colin PHIPPS ; Christopher W S CHENG ; Michelle M F CHAN ; Daphne KHOO ; Min Han TAN
Annals of the Academy of Medicine, Singapore 2010;39(7):580-582
Androgen Antagonists
;
therapeutic use
;
Anilides
;
therapeutic use
;
Antineoplastic Agents, Hormonal
;
therapeutic use
;
Bone Neoplasms
;
complications
;
secondary
;
Goserelin
;
therapeutic use
;
Humans
;
Male
;
Middle Aged
;
Nitriles
;
therapeutic use
;
Prostatic Neoplasms
;
complications
;
drug therapy
;
Purpura, Thrombotic Thrombocytopenic
;
drug therapy
;
etiology
;
Tosyl Compounds
;
therapeutic use
6.An Australian Evaluation of the Tick Program Awareness among University Students
International Journal of Public Health Research 2012;2(1):75-79
Cardiovascular disease is a major cause of death in Australia. The Tick Program by the National Heart Foundation was designed to assist consumers in making healthier food choices. The aim of our study was to evaluate the awareness of university students regarding the Tick Program as a sustainable approach in preventing the onset of cardiovascular disease (CVD) in youth. Following Ethics Committee approval, a cross-sectional study was undertaken in 2006 to measure university students’ level of awareness of the Tick Program using a self-administered survey form. Inclusion criteria were full-time university students who have lived in Australia for a minimum duration of twelve months and do their own shopping. Students of less than 18 years of age were excluded from the study. Of 110 university students surveyed, 97 questionnaires were successfully completed (response rate: 88%). Overall there was a high level of awareness (72.2%) of the Tick program, which was also considered trustworthy by a majority of participants, with a mean rating of 3.87 (on a scale of 1 to 5). Tick-approved products were also considered a healthier choice by participants (mean 4.06 out of 5). Participants were also asked to identify potential barriers limiting the use of the Tick in making purchase decisions. The most important barrier identified to the Tick program was the limited range of Tick-approved products. A significant proportion of respondents also believed there was limited publicity of the program. The Tick Program is considered to be trustworthy and the approved products were regarded as healthy, with the results showing that participants have confidence in the Tick Program. This research also highlighted the potential areas for improvement of the Tick Program.
Cardiovascular Diseases
;
Food Preferences
;
Students
;
Universities
;
Australia
9.Evaluation of data completeness of the prostate cancer registry after robotic radical prostatectomy.
Honghong HUANG ; Hong Gee SIM ; Tsung Wen CHONG ; John S P YUEN ; Christopher W S CHENG ; Weber K O LAU
Annals of the Academy of Medicine, Singapore 2010;39(11):848-853
INTRODUCTIONThis study evaluated the data completeness in the registration of prostate cancer after robotic radical prostatectomy (RRP) in the Urological Cancer Registry at the Singapore General Hospital (SGH), and its compliance to the international standards of US Commission on Cancer (CoC).
MATERIALS AND METHODSA certified cancer registrar reviewed all RRP cases between June 2003 and July 2008 in the Urological Cancer Registry at SGH.
RESULTSA total of 365 cases were reviewed. The results showed that 351 (96.2%) of RRP patients' demographic data were captured and 321 (87.9%) of RRP patients were staged. According to the international standards of CoC for an academic institution, the requirement is to capture 100% of all cancer cases and stage at least 90% of them. As for data completeness, 317 (86.7%) of RRP details were captured as compared to the CoC standard requirement of 90%.
CONCLUSIONSThe existing manual cancer registry does not fully meet the CoC standards. Hence, the registry increased sources of case-finding and used active case-finding. With improvements made to the data collection methodology, the number of prostate cancer cases identified has been increased by 52.1% from 215 in 2007 to 327 in 2009. The registry is expected to be fully compliant with the CoC standard with the recruitment of more full time cancer registrars when a new web-based cancer registry is in full operation.
Algorithms ; Data Collection ; methods ; Demography ; Humans ; Male ; Prostatectomy ; instrumentation ; methods ; statistics & numerical data ; Prostatic Neoplasms ; surgery ; Registries ; Research Design ; standards ; Robotics ; Singapore
10.Vascularisation of Urethral Repairs with the Gracilis Muscle Flap.
Ee Hsiang Jonah KUA ; Kah Woon LEO ; Yee Siang ONG ; Christopher CHENG ; Bien Keem TAN
Archives of Plastic Surgery 2013;40(5):584-588
BACKGROUND: The ability to achieve a long-term, stricture-free urethral repair is one of the ongoing challenges of reconstructive urologic surgery. A successful initial repair is critical, as repeat procedures are difficult, owing to distortion, scarring, and short urethral stumps. METHODS: We describe a technique in which the gracilis muscle flap is laid on or wrapped around the urethral repair site to provide a well-vascularised soft tissue reinforcement for urethral repair. This technique promotes vascular induction, whereby a new blood supply is introduced to the repair site to improve the outcome of urethral repair or anastomotic urethroplasty. The surface contact between the muscle flap and the repair site is enhanced by the use of fibrin glue to improve adherence and promote inosculation and healing. We employed this technique in 4 patients with different urethral defects. RESULTS: After a follow-up period of 32 to 108 months, all of the urethral repairs were successful without complications. CONCLUSIONS: Our results suggest that the use of a gracilis muscle flap to vascularise urethral repairs can improve the outcome of challenging urethral repairs.
Cicatrix
;
Fibrin Tissue Adhesive
;
Follow-Up Studies
;
Humans
;
Muscles
;
Reinforcement (Psychology)
;
Surgical Flaps
;
Urethra