1.Training of Radiology Residents in Singapore
Francis Cho Hao HO ; Cher Heng TAN ; Tze Chwan LIM ; Chow Wei TOO ; Hsien Min LOW ; Charles Xian Yang GOH
Korean Journal of Radiology 2024;25(12):1036-1038
2.Training of Radiology Residents in Singapore
Francis Cho Hao HO ; Cher Heng TAN ; Tze Chwan LIM ; Chow Wei TOO ; Hsien Min LOW ; Charles Xian Yang GOH
Korean Journal of Radiology 2024;25(12):1036-1038
3.Training of Radiology Residents in Singapore
Francis Cho Hao HO ; Cher Heng TAN ; Tze Chwan LIM ; Chow Wei TOO ; Hsien Min LOW ; Charles Xian Yang GOH
Korean Journal of Radiology 2024;25(12):1036-1038
4.Training of Radiology Residents in Singapore
Francis Cho Hao HO ; Cher Heng TAN ; Tze Chwan LIM ; Chow Wei TOO ; Hsien Min LOW ; Charles Xian Yang GOH
Korean Journal of Radiology 2024;25(12):1036-1038
5.Training of Radiology Residents in Singapore
Francis Cho Hao HO ; Cher Heng TAN ; Tze Chwan LIM ; Chow Wei TOO ; Hsien Min LOW ; Charles Xian Yang GOH
Korean Journal of Radiology 2024;25(12):1036-1038
6.Can we omit systematic biopsies in patients undergoing MRI fusion-targeted prostate biopsies?
Jeffrey J LEOW ; Soon Hock KOH ; Marcus Wl CHOW ; Wayren LOKE ; Rolando SALADA ; Seok Kwan HONG ; Yuyi YEOW ; Chau Hung LEE ; Cher Heng TAN ; Teck Wei TAN
Asian Journal of Andrology 2023;25(1):43-49
Magnetic resonance imaging (MRI)-targeted prostate biopsy is the recommended investigation in men with suspicious lesion(s) on MRI. The role of concurrent systematic in addition to targeted biopsies is currently unclear. Using our prospectively maintained database, we identified men with at least one Prostate Imaging-Reporting and Data System (PI-RADS) ≥3 lesion who underwent targeted and/or systematic biopsies from May 2016 to May 2020. Clinically significant prostate cancer (csPCa) was defined as any Gleason grade group ≥2 cancer. Of 545 patients who underwent MRI fusion-targeted biopsy, 222 (40.7%) were biopsy naïve, 247 (45.3%) had previous prostate biopsy(s), and 76 (13.9%) had known prostate cancer undergoing active surveillance. Prostate cancer was more commonly found in biopsy-naïve men (63.5%) and those on active surveillance (68.4%) compared to those who had previous biopsies (35.2%; both P < 0.001). Systematic biopsies provided an incremental 10.4% detection of csPCa among biopsy-naïve patients, versus an incremental 2.4% among those who had prior negative biopsies. Multivariable regression found age (odds ratio [OR] = 1.03, P = 0.03), prostate-specific antigen (PSA) density ≥0.15 ng ml-2 (OR = 3.24, P < 0.001), prostate health index (PHI) ≥35 (OR = 2.43, P = 0.006), higher PI-RADS score (vs PI-RADS 3; OR = 4.59 for PI-RADS 4, and OR = 9.91 for PI-RADS 5; both P < 0.001) and target lesion volume-to-prostate volume ratio ≥0.10 (OR = 5.26, P = 0.013) were significantly associated with csPCa detection on targeted biopsy. In conclusion, for men undergoing MRI fusion-targeted prostate biopsies, systematic biopsies should not be omitted given its incremental value to targeted biopsies alone. The factors such as PSA density ≥0.15 ng ml-2, PHI ≥35, higher PI-RADS score, and target lesion volume-to-prostate volume ratio ≥0.10 can help identify men at higher risk of csPCa.
Male
;
Humans
;
Prostate/pathology*
;
Prostatic Neoplasms/pathology*
;
Prostate-Specific Antigen
;
Magnetic Resonance Imaging/methods*
;
Image-Guided Biopsy/methods*
;
Retrospective Studies
7.Atypical Ductal Hyperplasia of the Breast on Core Needle Biopsy: Risk of Malignant Upgrade on Surgical Excision
Tiffany Sin Hui BONG ; Jun Kiat THADDAEUS TAN ; Juliana Teng SWAN HO ; Puay Hoon TAN ; Wing Sze LAU ; Tuan Meng TAN ; Jill Su Lin WONG ; Veronique Kiak MIEN TAN ; Benita Kiat TEE TAN ; Preetha MADHUKUMAR ; Wei Sean YONG ; Sue Zann LIM ; Chow Yin WONG ; Kong Wee ONG ; Yirong SIM
Journal of Breast Cancer 2022;25(1):37-48
Purpose:
This study identified factors predicting malignant upgrade for atypical ductal hyperplasia (ADH) diagnosed on core-needle biopsy (CNB) and developed a nomogram to facilitate evidence-based decision making.
Methods:
This retrospective analysis included women diagnosed with ADH at the National Cancer Centre Singapore (NCCS) in 2010–2015. Cox proportional hazards regression was used to identify clinical, radiological, and histological factors associated with malignant upgrade. A nomogram was constructed using variables with the strongest associations in multivariate analysis. Multivariable logistic regression coefficients were used to estimate the predicted probability of upgrade for each factor combination.
Results:
Between 2010 and 2015, 238,122 women underwent mammographic screening under the National Breast Cancer Screening Program. Among 29,564 women recalled, 5,971 CNBs were performed. Of these, 2,876 underwent CNBs at NCCS, with 88 patients (90 lesions) diagnosed with ADH and 26 lesions upgraded to breast malignancy on excision biopsy. In univariate analysis, factors associated with malignant upgrade were the presence of a mass on ultrasound (p = 0.018) or mammography (p = 0.026), microcalcifications (p = 0.047), diffuse microcalcification distribution (p = 0.034), mammographic parenchymal density (p = 0.008). and ≥ 3 separate ADH foci found on biopsy (p = 0.024). Mammographic parenchymal density (hazard ratio [HR], 0.04; 95% confidence interval [CI], 0.005–0.35; p = 0.014), presence of a mass on ultrasound (HR, 10.50; 95% CI, 9.21–25.2; p = 0.010), and number of ADH foci (HR, 1.877; 95% CI, 1.831–1.920; p = 0.002) remained significant in multivariate analysis and were included in the nomogram.
Conclusion
Our model provided good discrimination of breast cancer risk prediction (C-statistic of 0.81; 95% CI, 0.74–0.88) and selected for a subset of women at low risk (2.1%) of malignant upgrade, who may avoid surgical excision following a CNB diagnosis of ADH.
8.COMMENTARY - Recommendations and tips for passing the key feature problem examination
Siew Kim Kwa ; Chow Wei Tan ; Aik Chiew Ng ; Sheikh Mohd Amin Sheikh Mobarak ; Hairel Anuar Selamat
Malaysian Family Physician 2022;17(2):2-9
The Key Feature Problem (KFP), is part of the Conjoint MAFP/FRACGP exit examination for Family Medicine specialisation in Malaysia. KFP tests candidates’ skills in clinical reasoning and decision making. Over the years, KFP has been the cause of most of the failures in the Part 1 theory examination. This paper aims to highlight common errors committed by candidates and provide recommendations and practical examination technique tips on how to mitigate these errors. A summary of the 26 KFP cases used in the 2020 Conjoint KFP examination demonstrates the breadth and types of cases. From the feedback reports collated from eight assessors involved in this exam, we determined that although inadequate knowledge is probably the main contributor to failure, other easily correctible mistakes made by candidates further aggravate the situation. Common errors include offering more answers than requested, giving duplicate or incomplete answers, and writing answers out of context to the case scenario. The paper concludes with recommendations and sources for effective learning, and provides 12 examination technique tips. The tips include time management, reading carefully through the case, and checking that the answers are congruent with the questions asked.
Family Practice
;
General Practice
9.Prevalence and factors associated with sexual dysfunction among middle-aged women in a multi-ethnic country: A cross sectional study in Malaysia
Yin Yee Tey ; Siew Mooi Ching ; Mari Kannan Maharajan ; Kai Wei Lee ; Zhen Yee Chow ; Pei Wen Chua ; Chin Xuan Tan ; Shi Nie Lim ; Chun Han Tan ; Hui Zhu Thew ; Vasudevan Ramachandran ; Fan Kee Hoo
Malaysian Family Physician 2022;17(2):56-63
Introduction:
This study aimed to determine the prevalence and factors associated with female sexual dysfunction in an outpatient clinic in Malaysia.
Methods:
The study was conducted among female patients aged 50 years and older who attended the outpatient clinic of a public hospital in Malaysia. A self-administered questionnaire was used that was based on the Malay version of the Female Sexual Function Index questionnaire. The predictors of female sexual dysfunction were identified using multivariate logistic regression analysis.
Results:
A total of 263 females were recruited in this study, with a mean age of 60.6 ± 6.7 years. The distribution of the respondents’ ethnicities was mostly Malay (42.2%), followed by Chinese (41.8%) and Indian (16.0%). The prevalence of female sexual dysfunction among participants was 68.8%. The prevalence of the subscales of female sexual dysfunction was as follows: desire (85.2%), satisfaction (74.9%), arousal (71.1%), lubrication (66.9%), pain (61.2%), and orgasm (60.8%). According to multivariate logistic regression, patients of Indian ethnicity had an increased risk of female sexual dysfunction (OR=16.60, 95% CI=2.54–108.63), and a higher frequency of sexual intercourse was correlated with a lower risk of female sexual dysfunction (OR=0.13, 95% CI=0.08–0.24).
Conclusion
Seven-tenths of the middle-aged female patients attending the outpatient clinic suffered from female sexual dysfunction. Indian ethnicity and having a lower frequency of sexual intercourse were predictors of female sexual dysfunction. Future intervention studies are needed to address this problem.
Prevalence
;
Sexual Dysfunction, Physiological
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Women
;
Ambulatory Care Facilities
;
Middle Aged
10.Mid-Term Outcomes of Patients with Central Venous Occlusive Disease Undergoing Surveillance Venography and Intervention.
Hui Lin WONG ; Shaun Xavier Jm CHAN ; Satheesh RAMAMUTHY ; Kiang Hong TAY ; Tze Tec CHONG ; Chieh Suai TAN ; Ankur PATEL ; Chow Wei TOO ; Farah Gillan IRANI ; Lina Hl CHOONG ; Siew Ping CHNG ; Bien Soo TAN
Annals of the Academy of Medicine, Singapore 2020;49(6):360-366
INTRODUCTION:
To evaluate the mid-term outcomes of regular surveillance venography with or without percutaneous transluminal angioplasty (PTA) in haemodialysis patients presenting with central venous occlusive disease.
MATERIALS AND METHODS:
A single-centre retrospective analysis of haemodialysis patients who presented with central vein occlusion (CVO) and central vein stenosis (CVS) between January 2008 and December 2011 was performed. CVO and significant CVS were defined as 100% and >50% luminal narrowing, respectively. Upon successful angioplasty on first presentation, patients were followed up with regular surveillance venography within 3-6 months of the intervention and were re-treated when a significant stenosis or occlusion was demonstrated. Data on patient's demographics, comorbidities, presenting symptoms, type of upper limb dialysis access, lesion characteristics and complications were collected. Technical success, primary patency and primary assisted patency were analysed.
RESULTS:
Thirty-five patients with CVO and 77 patients with CVS were enrolled. The technical success of initial PTA was 77% and 73% for the CVO and CVS groups, respectively. The primary patency at 3 months was 65% and 55% for the CVO group and CVS group, respectively ( = 0.32). The primary assisted patency at 1 year was 88% and 99% for the CVO group and CVS group, respectively ( = 0.009). At 2 years, the primary assisted patency were 77% and 90%, respectively ( = 0.07). There was significant difference in the overall primary assisted patency ( = 0.048) between the CVO and CVS groups.
CONCLUSION
CVOs are more difficult to treat than CVS. High primary assisted patency rates can be achieved with surveillance venography, albeit at the expense of increased number of interventions. Further cost effectiveness studies need to be performed to study the true benefit of our surveillance programme.


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