Displaying publications 1 - 20 of 86 in total

  1. Tan, L., Awang, C.F.
    Malaysian Dental Journal, 2007;28(1):59-62.
    An audit of broken/lost removable appliances was carried out. This study aimed to measure the occurrence of broken/lost appliances over a period of 6 months. It also assessed whether there was any difference in the occurrence rate between patients who paid for treatment and those who received it free of charge. The results indicated that the total number of broken/lost removable appliances was 183, from a total of 472 appliances issued. For paying patients, 59 of 177 patients had at least one broken/lost appliance, giving an occurrence rate of 33.3%. For nonpaying patients, 60 of 112 patients had at least one broken/lost appliance, giving an occurrence rate of 53.6%.
  2. Dee, S., Singh, B., Remeli, M.F., Tan, L., Oberoi, A.
    This paper looks at electrical power generation from solar concentrator using thermoelectric generator. An experiment was conducted on a concentrator thermoelectric generator (CTEG) utilising solar thermal energy. The CTEG used a parabolic dish as concentrator with thermoelectric device installed at the focal point to convert thermal energy to generate electricity. The investigation covered the cooling effect of the cold side of the thermoelectric generator using natural and forced convection cooling for optimum output. Forced convection cooling with a fan provided 69% more power output from the CTEG system as the temperature difference across the TEG was greater than the system cooled by natural convection. The outcome of this project showed maximum power output was obtained for the CTEG system cooled by forced convection cooling.
  3. Tan L, Kamarulzaman A
    Biomed Imaging Interv J, 2006 Jan;2(1):e3.
    PMID: 21614220 MyJurnal DOI: 10.2349/biij.2.1.e3
    Tuberculosis (TB) is a well recognised occupational hazard for healthcare workers (HCWs). Concerns on the safety of healthcare settings in Malaysia was raised following a report of 25 HCWs working in 11 general hospitals in Malaysia who were infected with TB in 2004 being publicised in the media recently. As the disease burden in general is high in Malaysia, due attention should be given to this disease in our healthcare facilities including the radiology department, an often neglected area in TB infection control programmes. This article focuses on the key control measures that can be implemented in radiology departments in a developing country with limited resources.
  4. Cheong E, Tan L
    Malays Orthop J, 2021 Jul;15(2):159-162.
    PMID: 34429837 DOI: 10.5704/MOJ.2107.023
    Tibial tuberosity avulsion injuries are rare and result from direct trauma to the tibial tuberosity or forceful and repetitive contraction of the quadriceps muscles. In this case series, we describe a novel method of defunctioning the patella tendon using a suture anchor after a tibial tuberosity avulsion fracture repair was performed. We present three consecutive patients with tibial tuberosity avulsion fractures who were treated by the same surgeon using the technique described. Pre and post-operative range of motion of the knee joint were then reviewed retrospectively. All patients achieved pre-injury range of motion within three months post-operatively. In conclusion, defunctioning the patellar tendon with a suture anchor is a reliable and reproducible technique. The new technique yielded excellent functional outcomes which allowed patients to regain their pre-injury range of motion and the strength of the construct allows early range of motion.
  5. Mohd-Zain Z, Tan LJ
    Res Vet Sci, 2010 Nov 9.
    PMID: 21067786
    This article has been withdrawn at the request of the authors. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
  6. Tan LS, Tan S
    Med J Malaysia, 2018 02;73(1):54-56.
    PMID: 29531206 MyJurnal
    Tuberculosis (TB) is still an endemic disease in Malaysia. Cystic lung disease in post primary tuberculosis is not common. It can occur before, during or after completion of anti-TB treatment. Clinical history and review of serial chest radiograph is paramount to make the diagnosis. This case report highlights an interesting case of a young female patient who developed extensive cystic lung disease during the course of anti-TB treatment and the importance of recognizing this unusual manifestation.
  7. Chia BL, Tan LK
    Am J Cardiol, 1984 May 01;53(9):1413.
    PMID: 6538741
  8. Tan LY, Tan AP
    Med J Malaysia, 2018 12;73(6):439-440.
    PMID: 30647227
    Meningiomas are neoplasm arising from meningoepithelial cells, most commonly in the fifth to sixth decade of life. Meningiomas are rare in paediatric population, accounting for 0.4-4.1% of all paediatric tumours and less than 3% of paediatric brain tumours. However, meningiomas represent the most common dural based tumours in children. We describe a rare case of paediatric fibroblastic meningioma within the left middle cranial fossa masquerading as an intra-axial mass lesion. Our discussion will be centred on atypical features of paediatric meningiomas and differential diagnosis of extra-axial mass lesion in the paediatric population.
  9. Tan L, Ooi C, Chua H, Zulkiflee O
    Malays Orthop J, 2013 Jul;7(2):48-50.
    PMID: 25722828 MyJurnal DOI: 10.5704/MOJ.1307.005
    We report a huge pilomatrixoma of the left shoulder in an elderly female, raising fear of malignancy. Magnetic Resonance Imaging delineated the swelling and wide surgical excision was performed. Post operative recovery was uneventful. Long term follow up is necessary in view of the possibility of recurrence and malignant transformation.
  10. Tajunisah I, Wong P, Tan L, Rokiah P, Reddy S
    Int J Ophthalmol, 2011;4(5):519-24.
    PMID: 22553714 DOI: 10.3980/j.issn.2222-3959.2011.05.12
    AIM: To assess the awareness of eye complications and the prevalence of retinopathy, in the first visit to eye clinic, among type 2 diabetic patients attending a tertiary medical centre in Kuala Lumpur, Malaysia.
    METHODS: An investigator-administered questionnaire was given to 137 patients with diabetes undergoing first time eye screening in the eye clinic. This was followed by a detailed fundus examination by a senior ophthalmologist to assess for presence of retinopathy.
    RESULTS: Almost 86% of respondents were aware of diabetic eye complications, especially in patients who had achieved tertiary educational level (96.3%). The majority of the patients (78.8%) were referred by their physicians and only 20.4% came on their own initiative. Many of the patients (43.8%) did not know how frequent they should go for an eye check-up and 72.3% did not know what treatments were available. Lack of understanding on diabetic eye diseases (68.6%) was the main barrier for most patients for not coming for eye screening earlier. Despite a high level of awareness, only 21.9% had recorded HbA1c level of <6.5% while 31.4% were under the erroneous assumption of having a good blood sugar control. A total of 29.2% had diabetic retinopathy in their first visit eye testing.
    CONCLUSION: In the present study, 29.2% of type 2 diabetic patients had retinopathy in their first time eye testing. Although the awareness of diabetic eye complications was high among first time eye screening patients, the appropriate eye care-seeking behavior was comparatively less and should be rectified to prevent the rise of this sight threatening eye disease.
    KEYWORDS: awa-reness; diabetic retinopathy; eye complications; eye screening
    Study site: Eye clinic, University Malaya Medical Centre (UMMC), Kuala Lumpur, Malaysia
  11. Tajunisah I, Reddy SC, Tan LH
    Int Ophthalmol, 2009 Apr;29(2):85-90.
    PMID: 18026692
    A rare case of acute retinal necrosis caused by cytomegalovirus in an immunocompetent adult, diagnosed by polymerase chain reaction of vitreous aspirate, with good visual outcome after intravitreal and intravenous ganciclovir and oral prednisolone therapy, is reported. A 50-year-old healthy lady presented with redness and diminution of vision in her right eye of 10 days duration. She had anterior chamber inflammation, marked vitritis, and anterior retinal necrosis in the right eye. Blood and other investigations did not reveal any infectious diseases and HIV testing was negative. The retinal lesions and panuveitis resolved with treatment. Two months later she developed retinal detachment which was treated successfully. The best-corrected vision was 6/12 in the right eye. Seven cases of cytomegalovirus ocular infection in immunocompetent healthy adults, reported in the literature, were reviewed. The different presentations of this disease and the importance of suspecting this causative agent are highlighted.
  12. Tan LL, Ahmad K, Kareem BA, Harwant S
    Med J Malaysia, 2001 Jun;56 Suppl C:52-6.
    PMID: 11814250 MyJurnal
    An epidemiological study of 101 consecutive musculoskeletal sarcomas seen at the Institute of Radiotherapy and Oncology between 1995 and 1999 inclusive was carried out. The commonest sarcomas seen were osteosarcoma, rhabdomyosarcoma, Ewing's Sarcoma, liposarcoma, leimyosarcoma, malignant fibrous histiocytoma and chondrosarcoma; which collectively accounted for 84.2% of the group. Thirty patients (29.7%) presented with metastases. The commonest site of occurrence was lower extremity with 47.5%, followed by 34.7% in the trunk and peritoneum/axial skeleton, 9.9% in the head and neck region; and 7.90 in the upper extremity. We found no apparent relationship between race and incidence osteosarcoma and Ewing's sarcoma, as was reported by previous workers.
  13. Bee PC, Chow SK, Tan LH
    Med J Malaysia, 2003 Dec;58(5):777-9.
    PMID: 15190670
    Pancytopaenia is a rare clinical presentation of severe leptospirosis. We would like to report a case of severe leptospirosis that progressed to pancytopaenia despite initial penicillin therapy. The patient needed a second course of antibiotic with doxycycline to improve his persistent symptoms and cytopaenia. Persistent pancytopaenia in severe leptospirosis and its management were reviewed.
  14. Dahlia H, Tan LJ, Zarrahimah Z, Maria J
    Trop Biomed, 2009 Dec;26(3):341-5.
    PMID: 20237449 MyJurnal
    The isolation of Mycoplasma hyosynoviae from a piglet with severe pneumonia is described. This is the first report of M. hyosynoviae isolation in the country. The lung sample where the isolation was made was severely consolidated, suppurative and pleurisy. The pathogenicity of the M. hyosynoviae isolated has yet to be determined.
  15. Ng CK, Azuhairy A, Tan LH, Nordin A
    Malays Orthop J, 2015 Jul;9(2):51-53.
    PMID: 28435611 MyJurnal DOI: 10.5704/MOJ.1507.001
    Chondrosarcoma is the third most common primary tumour of the bone, after myeloma and osteosarcoma. Most of the chondrosarcoma grow slowly and rarely metastasize, and they have an excellent prognosis after adequate surgery. However most of them are chemo or radio-resistant. We report a case of primary chondrosarcoma of proximal humerus in a 36-year-old female who presented with a six years history of left shoulder swelling and restricted range of motion. Trucut biopsy showed a well-differentiated chondrosarcoma. The patient underwent forequarter amputation of left upper limb and was started on chemotherapy following operation.
  16. Tan L, Tan YS, Tan S
    Clin Imaging, 2020 Sep;65:133-137.
    PMID: 32470834 DOI: 10.1016/j.clinimag.2020.04.029
    BACKGROUND: Thyroid Imaging Reporting Data System (TI-RADS) is used to characterize thyroid nodules while reducing unnecessary FNAC. Over the years, several versions of TI-RADS have been developed but there is no consensus on which TI-RADS is the best system. This study aimed to compare the diagnostic accuracy and ability of ACR TI-RADS, EU TI-RADS, K TI-RADS, AI TI-RADS to eliminate unnecessary FNAC.

    METHODS: In this prospective study, thyroid nodules were characterized by using the four TI-RADS systems and US-guided FNAC was done for nodule with the highest ACR TI-RADS score. Correlation between TI-RADS and FNAC results were analyzed.

    RESULTS: Out of 244 thyroid nodules, 100 nodules with either size <1 cm (43 nodules) non-diagnostic or inconclusive FNAC results (57 nodules) were excluded. Seven nodules (4.9%) were confirmed to be malignant on FNAC. K TI-RADS showed 100% sensitivity and NPV but the lowest specificity (40.2%). EU TI-RADS had the highest specificity (83.2%) but the lowest sensitivity (57.1%) and NPV (97.4%). ACR TI-RADS had an average sensitivity (85.7%) and NPV (98.6%). The specificity of ACR TI-RADS (51.1%) was lower than EU TI-RADS but higher than K TI-RADS. AI TI-RADS showed higher specificity (61.8% vs 51.1%, p 

  17. Tan LN, Mariappa G, Voon HY, Suharjono H
    Med J Malaysia, 2017 12;72(6):380-381.
    PMID: 29308782 MyJurnal
    Severe sepsis with multi-organ failure is associated with a high mortality rate. This case report highlights the challenges and modalities available in the management of a lady with refractory shock and disseminated intravascular coagulation (DIC) due to toxic shock syndrome (TSS) from genital tract sepsis. Early surgical intervention to remove the source of infection, the use of recombinant activated factor VII to treat intractable disseminated intravascular coagulation and intravenous immunoglobulin to neutralise the circulating exotoxins, have been employed and shown to drastically improve outcomes.
  18. Vijayan R, Tay KH, Tan LB, Loganathan
    Singapore Med J, 1994 Oct;35(5):502-4.
    PMID: 7701371
    One hundred and eighty-three patients undergoing surgery were interviewed twenty-four hours following surgery to assess the quality of pain relief they received in the immediate postoperative period. Interviews were conducted using a standard questionnaire for all patients. They were asked to (1) rate the quality of pain relief they obtained on a Visual Pain Analogue Scale (VPAS-0 being no pain and 10 being the worst imaginable pain); (2) state whether they were happy and satisfied with the pain relief they received; (3) if dissatisfied, they were asked to give their reasons. 37.7% (69 patients) had moderate to severe pain--pain score greater than 6 on the VPAS. Most of these patients had undergone abdominal or major orthopaedic surgery. 32.7% (60 patients) were unhappy with their postoperative pain control. The main reasons for complaint from the patients were that analgesic injections were either not given promptly or were not given at all. The survey also highlighted the inadequate under-administration of narcotic injections in the postoperative period despite orders being written up. It showed there is an urgent need for setting up an Acute Pain Service for better postoperative pain control. An anaesthesiology based Acute Pain Service was started in October 1992.
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