1.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
2.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
3.Intramuscular gentamicin improves the efficacy of ciprofloxacin as an antibiotic prophylaxis for transrectal prostate biopsy.
Henry S S HO ; Lay Guat NG ; Yeh Hong TAN ; Mavis YEO ; Christopher W S CHENG
Annals of the Academy of Medicine, Singapore 2009;38(3):212-216
INTRODUCTIONInfection-related complications after transrectal ultrasound guided prostatic biopsy (TRPB) could be life threatening. Our centre observed sepsis after TRPB despite prophylactic oral ciprofloxacin. We reviewed all cases of post-TRPB sepsis with their bacteriology and evaluated if the addition of intramuscular (I/M) gentamicin to standard prophylaxis before TRPB could reduce its incidence.
MATERIALS AND METHODSIn a single urological centre, we performed an interventional study that compared a prospective group with retrospective control. The latter is known as the "cipro-only" group included consecutive patients who underwent TRPB between 1 September 2003 and 31 August 2004. The addition of I/M gentamicin 80 mg half an hour before TRPB started on 1 September 2004. All subsequent patients who underwent TRPB until 31 August 2005 were included in the "cipro+genta" group. Patients who did not receive the studied antibiotics were excluded.
RESULTSThere were 374 patients in the "cipro+genta" group and 367 patients in the "cipro-only" group with comparable profiles. There were 12 cases of post-TRPB sepsis in the "cipro-only" group and 5 cases in the "cipro+genta" group. Ciprofloxacin-resistant Escherichia coli (E. coli) was the only pathogen isolated in both groups. In the "cipro-only" group, 9 patients had positive blood cultures and 8 were sensitive to gentamicin. In the "cipro+genta" group, the only positive E. coli was gentamicin-resistant. One patient in the "cipro+genta" group was admitted to the intensive care unit with septicaemia.
CONCLUSIONThe addition of I/M gentamicin to oral ciprofloxacin is a safe and effective prophylactic antibiotic regime in reducing the incidence of post-TRPB sepsis.
Administration, Oral ; Adult ; Aged ; Antibiotic Prophylaxis ; methods ; Biopsy ; Ciprofloxacin ; administration & dosage ; therapeutic use ; Drug Resistance, Bacterial ; Escherichia coli ; drug effects ; isolation & purification ; Gentamicins ; administration & dosage ; Humans ; Injections, Intramuscular ; Male ; Middle Aged ; Prospective Studies ; Prostate ; diagnostic imaging ; pathology ; Rectum ; Ultrasonography
4.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
5.Local experience of endorectal magnetic resonance imaging of prostate with correlation to radical prostatectomy specimens.
Judy S P TAN ; Choon Hua THNG ; Puay Hoon TAN ; Christopher W S CHENG ; Weber K O LAU ; Terence W K TAN ; Juliana T S HO ; Boon Chye CHING
Annals of the Academy of Medicine, Singapore 2008;37(1):40-43
INTRODUCTIONWe evaluated the accuracy of endorectal magnetic resonance imaging (MRI) in the staging of prostate cancer.
MATERIALS AND METHODSWe retrospectively reviewed 32 patients who underwent endorectal MR prostate prior to radical prostatectomy. The tumour stage based on MR imaging was compared with the pathologic stage. The sensitivity and specificity of endorectal MR prostate in the evaluation of extracapsular extension (ECE) of the tumour were then determined.
RESULTSMR correctly diagnosed 17 cases of organ-confined prostate carcinoma and 2 cases of locally advanced disease. In the evaluation of ECE, endorectal MR achieved a high specificity of 94.4%, low sensitivity of 14.3% and moderate accuracy of 59.4%.
CONCLUSIONEndorectal MR prostate has high specificity for the detection of ECE. It is useful in the local staging of prostate cancer in patients with intermediate risk as this helps to ensure that few patients will be deprived of potentially curative surgery.
Adult ; Humans ; Magnetic Resonance Imaging ; methods ; Male ; Medical Audit ; Middle Aged ; Neoplasm Staging ; methods ; Prostatectomy ; Prostatic Neoplasms ; pathology ; surgery ; Rectum ; Retrospective Studies ; Sensitivity and Specificity
6.Laparoscopic partial nephrectomy for renal tumours: early experience in Singapore general hospital.
Mohd Zam Nor AZHARI ; Yeh Hong TAN ; Paul Anthony SUNGA ; Sidney K H YIP ; Christopher W S CHENG
Annals of the Academy of Medicine, Singapore 2009;38(7):576-575
INTRODUCTIONTo review the perioperative and short-term outcome of all laparoscopic partial nephrectomies (LPN) performed in a single institution.
MATERIALS AND METHODSThirteen consecutive patients who underwent LPN since the beginning of the programme in March 2002 to January 2008 were enrolled. Demographic, perioperative and follow-up data were retrospectively collected. Transperitoneal approach was used in all cases, and vascular control was achieved with the use of a laparoscopic Satinsky clamp or vascular tape. The tumour was excised using cold scissors. Transected intrarenal vessels were suture ligated and the parenchymal defect was closed primarily with absorbable suture over a bolster.
RESULTSThirteen patients underwent a total of 14 LPN. The median age of patients was 60 years (range, 41 to 77). The mean tumour size was 24 +/- 11.4 (2SD) mm. The mean operative time was 228 +/- 129 (2SD) minutes and median warm ischaemia time was 35 minutes (range, 24 to 68). Postoperatively, serum haemoglobin level decreased by a mean of 1.4 +/- 2.5 (2SD) gm/dL and serum creatinine increased by a mean of 22.5 +/- 25.8 (2SD) micromol/L. Twelve out of 13 (92%) patients achieved their baseline serum creatinine level within 1 month postoperatively. There was 1 open conversion (7%), and 2 patients (14%) required blood transfusion perioperatively. Two patients (14%) had transient fever postoperatively due to basal atelectasis. No other complications were encountered. Median patient hospital stay was 4 days (range, 2 to 10). Eleven out of 14 (79%) of the tumours were renal cell carcinoma (RCC). At a median follow-up of 12 months (range, 6 to 53), all except 1 patient with RCC were disease-free.
CONCLUSIONSOur experience has shown that laparoscopic partial nephrectomy is a safe, feasible technique in our centre for patients with small exophytic renal tumours. Patients can be discharged early with preservation of renal function and good early cancer control.
Adult ; Aged ; Carcinoma, Renal Cell ; surgery ; Female ; Hospitals, General ; Humans ; Kidney Neoplasms ; surgery ; Laparoscopy ; methods ; Length of Stay ; Male ; Middle Aged ; Nephrectomy ; methods ; Retrospective Studies ; Singapore
7.The use of n-butyl-2 cyanoacrylate as an embolic agent in the minimally invasive treatment of renal arteriovenous malformations.
Pei Ghim POH ; Bien Soo TAN ; Seng Choe THAM ; Kiang Hiong TAY ; Austin M M HTOO ; Michael B K LIN ; Christopher W S CHENG ; Tsung Wen CHONG ; Keong Tat FOO ; Winston E H LIM
Annals of the Academy of Medicine, Singapore 2013;42(4):207-209
Adult
;
Arteriovenous Malformations
;
therapy
;
Embolization, Therapeutic
;
methods
;
Enbucrilate
;
therapeutic use
;
Female
;
Humans
;
Kidney
;
blood supply
;
Male
;
Middle Aged
8.Percutaneous transluminal angioplasty of transplant renal artery stenosis.
Lee Lian CHEW ; Bien Soo TAN ; Krishna KUMAR ; Maung Myint HTOO ; Kok Seng WONG ; Christopher W S CHENG ; Terence K B TEO ; Farah Gillani IRANI ; Hui Lin CHOONG ; Kiang Hiong TAY
Annals of the Academy of Medicine, Singapore 2014;43(1):39-43
INTRODUCTIONThis study aimed to assess the outcome of percutaneous transluminal angioplasty (PTA) as the primary treatment for transplant renal artery stenosis (TxRAS).
MATERIALS AND METHODSA retrospective review of PTA of TxRAS from April 1999 to December 2008 was performed. Twenty-seven patients (17 males (M):10 females (F)) with the mean age of 49.5 years underwent PTA of TxRAS in the review period. Indications for PTA were suboptimal control of hypertension (n=12), impaired renal function (n=6) and both suboptimal control of hypertension and impaired renal function (n=9). All patients had doppler ultrasound scans prior to their PTA. In addition, 5 of these patients had computed tomography angiography (CTA) and another 7 had magnetic resonance angiography (MRA) evaluation. Mean follow-up period was 57.0 months (range, 7 to 108 months).
RESULTSThe stenotic lesions were located proximal to the anastomosis (n=2), at the anastomosis (n=15), and distal to the anastomosis (n=14). Technical success rate was 96.3%. One case was complicated by extensive dissection during PTA, resulting in subsequent graft failure. The overall clinical success rate was 76.9%. Seven out of 26 patients had restenoses (26.9% of cases). These were detected at a mean of 14.3 months post angioplasty (range, 5 to 38 months). All 7 patients underwent a second PTA successfully. Three of these patients required more than 1 repeat PTA.
CONCLUSIONPTA is safe and effective in the management of symptomatic TxRAS and should be the primary treatment of choice. Close surveillance for restenosis is required and when diagnosed, re-angioplasty can be performed.
Adult ; Angioplasty ; Female ; Humans ; Kidney Transplantation ; Male ; Middle Aged ; Postoperative Complications ; surgery ; Renal Artery Obstruction ; surgery ; Retrospective Studies ; Time Factors