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  1. Koh KS, Abdullah NA, Chong VH
    Med J Malaysia, 2014 Dec;69(6):293-5.
    PMID: 25934966
    Inferior vena cava (IVC) thrombosis typically arises distally from a thrombophlebitic extension in the pelvis or the lower extremities. It may also occur from propagation of an ovarian vein thrombosis as a result of gynaecological disorders such as pelvic inflammatory disease, endometritis or from pelvic surgeries. In this report, we present an interesting case of a tubo-ovarian abscess with an ectopic IVC thrombus. The approach to management in such cases is also highlighted.
  2. Koh KS, Chong VH, Yapp SK, Chong CF
    Med J Malaysia, 2012 Oct;67(5):522-3.
    PMID: 23770871
    Dysphagia is considered a warning symptom that requires exclusion of significant pathology such as oesophageal cancer, especially in elderly patients. Benign neoplasms of the oesophagus are rare. We report the case of a 69-year-old lady who presented with a five years history of infrequent intermittent dysphagia that had rapidly progressed over one month. This was associated with globus sensation, weight loss, intermittent episodes of stridor and aspiration pneumonia. Investigations revealed a large oesophageal lipoma in the proximal oesophagus extending down to the lower oesophagus. This was successfully resected via a left cervical approach. She remained well two years after the surgery.
  3. Koh KS, Bickle I, Mathew VV, Chong VH
    Malays Fam Physician, 2016;11(2-3):27-29.
    PMID: 28491243
    INTRODUCTION: Biliary diseases during pregnancy are not uncommon and are frequently due to cholelithiasis. Choledochal cyst during pregnancy is rare. The management of biliary pathologies during pregnancy poses a challenge as the window of opportunity to carry out any interventions with minimal risk is small.

    CASE REPORT: We report the case of a lady who was diagnosed with a large type I choledochal cyst during the second trimester of pregnancy. Due to increasing symptoms and recurrent cholangitis, she was managed with antibiotics and surgical resection. She remained well and delivered a healthy baby boy.

    CONCLUSION: Clinicians need to consider choledochal cyst as a differential in pregnant patients presenting with upper abdominal fullness.
  4. Yew M, Ren Y, Koh KS, Sun C, Snape C
    Glob Chall, 2019 Jan;3(1):1800060.
    PMID: 31565355 DOI: 10.1002/gch2.201800060
    Microfluidic systems have advanced beyond natural and life science applications and lab-on-a-chip uses. A growing trend of employing microfluidic technologies for environmental detection has emerged thanks to the precision, time-effectiveness, and cost-effectiveness of advanced microfluidic systems. This paper reviews state-of-the-art microfluidic technologies for environmental applications, such as on-site environmental monitoring and detection. Microdevices are extensively used in collecting environmental samples as a means to facilitate detection and quantification of targeted components with minimal quantities of samples. Likewise, microfluidic-inspired approaches for separation and treatment of contaminated water and air, such as the removal of heavy metals and waterborne pathogens from wastewater and carbon capture are also investigated.
  5. Koh KS, Telisinghe PU, Bickle I, Abdullah MS, Chong CF, Chong VH
    Asian Pac J Cancer Prev, 2015;16(8):3279-83.
    PMID: 25921132
    BACKGROUND: Colorectal cancer (CRC) is the most common gastrointestinal cancer and the incidence is increasing. CRC is more common with increasing age, but a proportion occurs in young adults, termed young CRC. This study assessed the incidence and the demographic of young CRC in Brunei Darussalam.

    MATERIALS AND METHODS: All histologically proven CRC between 1986 and 2014 registered with the Department of Pathology cancer registry were reviewed and data extracted for analyses. Young CRC was defined as cancer in patients aged less than 45 years. The various population groups were categorized into locals (Malays, Chinese and Indigenous) and expatriates.

    RESULTS: Over the study period, there were 1,126 histologically proven CRC (mean age 59.1 ± 14.7 years, Male 58.0%, Locals 91.8% and 8.2% expatriates). Young CRC accounted for 15.1% with the proportion declining over the years, from 29% (1986-1990) to 13.2% (2011-2014). The proportion of young CRC was highest among the indigenous (30.8%), followed by the expatriates (29.3%), Malays (14.3%) and lowest among the Chinese (10.8%). The mean age of young CRC was 35.9 ± 6.2; lowest among the indigenous (33.5 ± 6.7), expatriate (34.9 ± 6.0) groupd and the Malays (35.6 ± 6.5) compared to the Chinese (38.6 ± 4.6), a similar trend being observed in the non-young CRC groups. There were no difference between the genders and tumor locations (rectum or colon) between the young and the non-young CRC cases. Female young CRC was significantly younger than male (p<0.05) without any significant variation between the various population groups (p>0.05).

    CONCLUSIONS: Our study showed that the young CRC accounted for 15.1% of all CRC with declining trend observed over recent years. Young CRC was more common among indigenous, expatriates and Malays and least common among the Chinese. There were no differences in the gender and tumor locations.
  6. Lian Z, Chan Y, Luo Y, Yang X, Koh KS, Wang J, et al.
    Electrophoresis, 2020 06;41(10-11):891-901.
    PMID: 31998972 DOI: 10.1002/elps.201900403
    Scale-up in droplet microfluidics achieved by increasing the number of devices running in parallel or increasing the droplet makers in the same device can compromise the narrow droplet-size distribution, or requires high fabrication cost, when glass- or polymer-based microdevices are used. This paper reports a novel way using parallelization of needle-based microfluidic systems to form highly monodispersed droplets with enhanced production rates yet in cost-effective way, even when forming higher order emulsions with complex inner structure. Parallelization of multiple needle-based devices could be realized by applying commercially available two-way connecters and 3D-printed four-way connectors. The production rates of droplets could be enhanced around fourfold (over 660 droplets/min) to eightfold (over 1300 droplets/min) by two-way connecters and four-way connectors, respectively, for the production of the same kind of droplets than a single droplet maker (160 droplets/min). Additionally, parallelization of four-needle sets with each needle specification ranging from 34G to 20G allows for simultaneous generation of four groups of PDMS microdroplets with each group having distinct size yet high monodispersity (CV < 3%). Up to six cores can be encapsulated in double emulsion using two parallelly connected devices via tuning the capillary number of middle phase in a range of 1.31 × 10-4 to 4.64 × 10-4 . This study leads to enhanced production yields of droplets and enables the formation of groups of droplets simultaneously to meet extensive needs of biomedical and environmental applications, such as microcapsules with variable dosages for drug delivery or drug screening, or microcapsules with wide range of absorbent loadings for water treatment.
  7. Aksu F, Topacoglu H, Arman C, Atac A, Tetik S, Hasanovic A, et al.
    Surg Radiol Anat, 2009 Sep;31 Suppl 1:95-229.
    PMID: 27392492 DOI: 10.1007/BF03371486
    Conference abstracts: Malaysia in affiliation
    (1). PO-211. AGE-SPECIFIC STRESS-MODULATED
    CHANGES OF SPLENIC IMMUNOARCHITECTURE
    IN THE GROWING BODY. Marina Yurievna Kapitonova, Syed Baharom Syed Ahmad Fuad, Flossie Jayakaran; Faculty of Medicine, Universiti Teknologi MARA, Shah Alam, Malaysia
    syedbaharom@salam.uitm.edu.my
    (2). PO-213. A DETAILED OSTEOLOGICAL STUDY OF THE ANOMALOUS GROOVES NEAR THE
    MASTOID NOTCH OF THE SKULL. ISrijit Das, 2Normadiah Kassim, lAzian Latiff, IFarihah Suhaimi, INorzana Ghafar, lKhin Pa Pa Hlaing, lIsraa Maatoq, IFaizah Othman; I Department of Anatomy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia; 2 Department of Anatomy, Universiti Malaya, Kuala Lumpur, Malaysia. das_sri jit23@rediffmail.com
    (3). PO-21S. FIRST LUMBRICAL MUSCLE OF THE
    PALM: A DETAILED ANATOMICAL STUDY WITH
    CLINICAL IMPLICATIONS. Srijit Das, Azian Latiff, Parihah Suhaimi, Norzana Ghafar, Khin Pa Pa Hlaing, Israa Maatoq, Paizah Othman; Department of Anatomy, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia. das_srijit23@rediffmail.com
    (4). PO-336. IMPROVEMENT IN EXPERIMENTALLY
    INDUCED INFRACTED CARDIAC FUNCTION
    FOLLOWING TRANSPLANTATION OF HUMAN
    UMBILICAL CORD MATRIX-DERIVED
    MESENCHYMAL CELLS. lSeyed Noureddin Nematollahi-Mahani, lMastafa Latifpour, 2Masood Deilami, 3Behzad Soroure-Azimzadeh, lSeyed
    Hasan Eftekharvaghefi, 4Fatemeh Nabipour, 5Hamid
    Najafipour, 6Nouzar Nakhaee, 7Mohammad Yaghoobi, 8Rana Eftekharvaghefi, 9Parvin Salehinejad, IOHasan Azizi; 1 Department of Anatomy, Kerman University of Medical Sciences, Kerman, Iran; 2 Department of Cardiosurgery, Hazrat-e Zahra Hospital, Kerman, Iran; 3 Department of Cardiology, Kerman University of Medical Sciences, Kerman, Iran; 4 Department of Pathology, Kerman University of Medical Sciences, Kerman, Iran; 5 Department of Physiology, Kerman University of Medical Sciences, Kerman, Iran; 6 Department of Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran; 7 Department
    of Biotechnology, Research Institute of Environmental Science, International Center for Science, High Technology & Environmental Science, Kerman, Iran; 8 Students Research Center, Kerman University of Medical Sciences, Kerman, Iran; 9 Institute of Bioscience, University Putra Malaysia,
    Kuala Lumpur, Malaysia; 10 Department of Stem Cell, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran. nnematollahi@kmu.ac.ir
    (5).
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