Displaying publications 81 - 100 of 136 in total

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  1. Lee WS, Chong LA, Begum S, Abdullah WA, Koh MT, Lim EJ
    J Pediatr Hematol Oncol, 2001 May;23(4):244-6.
    PMID: 11846304
    We report a newborn infant girl, born to consanguineous parents, with recurrent intracranial hemorrhage secondary to congenital factor V deficiency with factor V inhibitor. Repeated transfusions of fresh-frozen plasma (FFP) and platelet concentrates, administrations of immunosuppressive therapy (prednisolone and cyclophosphamide), and intravenous immunoglobulin failed to normalize the coagulation profiles. Exchange transfusion followed-up by administrations of activated prothrombin complex and transfusions of FFP and platelet concentrates caused a temporary normalization of coagulation profile, enabling an insertion of ventriculoperitoneal (VP) shunt for progressive hydrocephalus. The treatment was complicated by thrombosis of left brachial artery and ischemia of left middle finger. The child finally died from another episode of intracranial hemorrhage 10 days after insertion of the VP shunt.
  2. Chua KB, Lam SK, AbuBakar S, Lim ST, Paranjothy M, Koh MT, et al.
    J Clin Virol, 2000 Aug;17(2):83-90.
    PMID: 10942088
    BACKGROUND: The clinical sign of uvulo-palatoglossal junctional (UPJ) ulcers was first noted in 1983 in a 5.5-month-old baby with exanthem subitum (ES). An earlier prospective clinical study showed that there was a strong association of UPJ ulcers and occurrence of ES with a positive predictive value of 95.3% and negative predictive value of 100%.

    OBJECTIVE: To determine the value of uvulo-palatoglossal junctional (UPJ) ulcers as an early clinical sign of exanthem subitum (ES) due to human herpesvirus 6 (HHV 6) infection.

    STUDY DESIGN: A case-control study of 20 febrile children with UPJ ulcers versus 26 febrile children without UPJ ulcers. These children were followed up for any development of ES and investigated for human herpesvirus 6 (HHV 6) as the causative agents of the febrile episodes.

    RESULTS: In this study, 20 out of 46 febrile children aged 3 months to 3 years with UPJ ulcers were virologically and/or serologically confirmed to be due to primary HHV 6 infection. The rest of the 26 children without ulcers did not have HHV 6 infection. Of the 20 children with UPJ ulcers, only 17 of the 19 children with adequate follow-up till subsidence of fever developed ES. None of the 26 children without UPJ ulcers developed ES.

    CONCLUSION: Statistically, there was a significant association of UPJ ulcers as an early sign of ES with a positive predictive value of 89.5% and negative predictive value of 100%. This finding also suggests that the presence of UPJ ulcers is a useful pathognomic clinical sign of symptomatic primary HHV 6 infection.

  3. Saraswathy TS, Sinniah M, Lee WS, Lye MS, Choo KE, Jusoh H
    PMID: 7777927
    In 1990 the Institute for Medical Research carried out a serosurvey in the state of Kelantan to study the age stratified immune prevalence rates for measles and poliomyelitis. Our findings indicate that 981 out of 1,097 (89%) of the population screened had measles antibodies and more than 90% (366 out of 400) had antibodies to all three serotypes of poliovirus. The susceptible group for measles was infants below one year of age, of whom 53.3% (8/15) did not have measles antibody. Of 400 subjects, 125 (31.3%) who were either incompletely vaccinated or had not been vaccinated against poliomyelitis, had polio neutralizing antibodies to all three poliovirus serotypes, suggesting herd immunity in the population. No high risk age group could be identified for poliomyelitis.
  4. Loganathan T, Jit M, Hutubessy R, Ng CW, Lee WS, Verguet S
    Trop Med Int Health, 2016 Nov;21(11):1458-1467.
    PMID: 27503549 DOI: 10.1111/tmi.12766
    OBJECTIVES: To evaluate rotavirus vaccination in Malaysia from the household's perspective. The extended cost-effectiveness analysis (ECEA) framework quantifies the broader value of universal vaccination starting with non-health benefits such as financial risk protection and equity. These dimensions better enable decision-makers to evaluate policy on the public finance of health programmes.

    METHODS: The incidence, health service utilisation and household expenditure related to rotavirus gastroenteritis according to national income quintiles were obtained from local data sources. Multiple birth cohorts were distributed into income quintiles and followed from birth over the first five years of life in a multicohort, static model.

    RESULTS: We found that the rich pay more out of pocket (OOP) than the poor, as the rich use more expensive private care. OOP payments among the poorest although small are high as a proportion of household income. Rotavirus vaccination results in substantial reduction in rotavirus episodes and expenditure and provides financial risk protection to all income groups. Poverty reduction benefits are concentrated amongst the poorest two income quintiles.

    CONCLUSION: We propose that universal vaccination complements health financing reforms in strengthening Universal Health Coverage (UHC). ECEA provides an important tool to understand the implications of vaccination for UHC, beyond traditional considerations of economic efficiency.

  5. Koletzko B, Fishbein M, Lee WS, Moreno L, Mouane N, Mouzaki M, et al.
    J Pediatr Gastroenterol Nutr, 2020 05;70(5):702-710.
    PMID: 32205768 DOI: 10.1097/MPG.0000000000002708
    Global childhood obesity increased more than 8-fold over 40 years, inducing a very large personal, societal, and economic burden. Effects of available treatments are less than satisfactory; therefore, effective prevention is of high priority. In this narrative review, we explore preventive opportunities. The available evidence indicates large benefits of improving nutrition and lifestyle during early life, such as promoting breast-feeding and improving the quality of infant and early childhood feeding. Promoting healthy eating patterns and limiting sugar-containing beverage consumption from early childhood onwards are of great benefit. Regular physical activity and limited sedentary lifestyle and screen time alone have limited effects but are valuable elements in effective multicomponent strategies. The home environment is important, particularly for young children, and can be improved by educating and empowering families. School- and community-based interventions can be effective, such as installing water fountains, improving cafeteria menus, and facilitating regular physical activity. Reducing obesogenic risk factors through societal standards is essential for effective prevention and limiting socioeconomic disparity; these may comprise food, drink, and physical activity standards for day cares and schools, general food quality standards, front-of-pack food labeling, taxation of unhealthy foods, restriction of food advertisements to children, and others. Effective prevention of childhood obesity is not achieved by single interventions but by integrated multicomponent approaches involving multiple stakeholders that address children, families, and societal standards. Pediatricians and their organizations should be proactive in supporting and empowering families to support their children's health, and in promoting societal measures that protect children.
  6. Chai PF, Lee WS, Brown RM, McPartland JL, Foster K, McKiernan PJ, et al.
    J Pediatr Gastroenterol Nutr, 2010 Mar;50(3):295-302.
    PMID: 20118802 DOI: 10.1097/MPG.0b013e3181bf0ef7
    Graft rejection and disease recurrence are well-recognized complications of liver transplantation (LT) for autoimmune hepatitis (AIH) and autoimmune sclerosing cholangitis (AISC). We describe indications and outcome of LT for childhood AIH and AISC.
  7. Lee YY, Leow AH, Chai PF, Raja Ali RA, Lee WS, Goh KL
    JGH Open, 2021 Jan;5(1):11-19.
    PMID: 33490608 DOI: 10.1002/jgh3.12469
    Probiotics comprise a large group of microorganisms, which have different properties and thus confer different benefits. The use of probiotics has shown promising results in the management of diarrheal diseases. While the availability of probiotic products has flourished in the marketplace, there is limited guidance on the selection of probiotics for clinical use. This position paper is aimed at informing clinicians about the proper selection criteria of probiotics based on current evidence on strain-specific efficacy and safety for the management of diarrheal diseases. Members of the working group discussed issues on probiotic use in clinical practice, which were then drafted into statements. Literature to support or refute the statements were gathered through a search of medical literature from 2011 to 2020. Recommendations were formulated based on the drafted statements and evidence gathered, revised as necessary, and finalized upon agreement of all members. Twelve statements and recommendations were developed covering the areas of quality control in the manufacturing of probiotics, criteria for selection of probiotics, and established evidence for use of probiotics in diarrheal diseases in adults and children. Recommendations for the use of specific probiotic strains in clinical practice were categorized as proven and probable efficacy based on strength of evidence. Robust evidence is available to support the use of probiotics for diarrheal diseases in clinical practice. Based on the results obtained, we strongly advocate the careful evaluation of products, including manufacturing practices, strain-specific evidence, and contraindications for at-risk populations when choosing probiotics for use in clinical practice.
  8. Lee WS, Ong SY, Foo HW, Wong SY, Kong CX, Seah RB, et al.
    World J Gastroenterol, 2017 Nov 21;23(43):7776-7784.
    PMID: 29209118 DOI: 10.3748/wjg.v23.i43.7776
    AIM: To examine the medical status of children with biliary atresia (BA) surviving with native livers.

    METHODS: In this cross-sectional review, data collected included complications of chronic liver disease (CLD) (cholangitis in the preceding 12 mo, portal hypertension, variceal bleeding, fractures, hepatopulmonary syndrome, portopulmonary hypertension) and laboratory indices (white cell and platelet counts, total bilirubin, albumin, international normalized ratio, alanine aminotransferase, aspartate aminotransferase, γ-glutamyl transpeptidase). Ideal medical outcome was defined as absence of clinical evidence of CLD or abnormal laboratory indices.

    RESULTS: Fifty-two children [females = 32, 62%; median age 7.4 years, n = 35 (67%) older than 5 years] with BA (median age at surgery 60 d, range of 30 to 148 d) survived with native liver. Common complications of CLD noted were portal hypertension (40%, n = 21; 2 younger than 5 years), cholangitis (36%) and bleeding varices (25%, n = 13; 1 younger than 5 years). Fifteen (29%) had no clinical complications of CLD and three (6%) had normal laboratory indices. Ideal medical outcome was only seen in 1 patient (2%).

    CONCLUSION: Clinical or laboratory evidence of CLD are present in 98% of children with BA living with native livers after hepatoportoenterostomy. Portal hypertension and variceal bleeding may be seen in children younger than 5 years of age, underscoring the importance of medical surveillance for complications of BA starting at a young age.

  9. Chan KJ, Song ZL, Chew KS, Ng RT, Mohd Taib SH, Lee WS
    J Paediatr Child Health, 2021 Feb;57(2):239-245.
    PMID: 32936506 DOI: 10.1111/jpc.15184
    AIM: We aimed to ascertain the efficacy and feasibility of exclusive enteral nutrition (EEN) as an induction and re-induction therapy in Asian children with Crohn's disease (CD).

    METHODS: All children diagnosed with CD between 1995 and 2019 were reviewed. Response to induction was compared between EEN and standard immunosuppression (IS) using Paediatric Crohn's Disease Activity Index, growth failure, perianal disease and extra-intestinal manifestations. Two study groups were analysed: (i) primary induction and (ii) re-induction for relapses.

    RESULTS: Twenty-nine children (mean age (± standard deviation) at diagnosis 9.4 ± 8.5 years old, ileo-colonic 35%, non-stricturing 79%) were studied. At primary induction (group 1; n = 18), no difference was observed in remission rates (9/13 vs. 5/5; P = 0.278), efficacy for improving growth failure (6/8 vs. 0/1; P > 0.999), perianal disease (4/6 vs. 0/2; P > 0.999) and extra-intestinal manifestations (2/2 vs. 0/0; P > 0.999) with EEN or standard IS. Group 2 (n = 38 relapses), no difference was observed in remission rates (16/19 vs. 15/19, P > 0.999), growth failure (0/7 vs. 4/14; P = 0.328), perianal disease (1/10 vs. 7/7; P > 0.999) and extra-intestinal manifestations (0/0 vs. 1/1; P > 0.999) with EEN or standard IS. Both treatment modalities were equally effective as re-induction in relapses in patients previously treated with EEN (P = 0.191).

    CONCLUSION: As compared to standard IS, EEN was equally effective in primary induction and re-induction for relapse in Asian children with CD and can be repeatedly used for recurrent relapses.

  10. Ng RT, Lee WS, Ang HL, Teo KM, Yik YI, Lai NM
    Cochrane Database Syst Rev, 2016 Jul 05;7:CD010873.
    PMID: 27378432 DOI: 10.1002/14651858.CD010873.pub2
    BACKGROUND: Childhood constipation is a common problem with substantial health, economic and emotional burdens. Existing therapeutic options, mainly pharmacological, are not consistently effective, and some are associated with adverse effects after prolonged use. Transcutaneous electrical stimulation (TES), a non-pharmacological approach, is postulated to facilitate bowel movement by modulating the nerves of the large bowel via the application of electrical current transmitted through the abdominal wall.

    OBJECTIVES: Our main objective was to evaluate the effectiveness and safety of TES when employed to improve bowel function and constipation-related symptoms in children with constipation.

    SEARCH METHODS: We searched MEDLINE (PubMed) (1950 to July 2015), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library, Issue 7, 2015), EMBASE (1980 to July 2015), the Cochrane IBD Group Specialized Register, trial registries and conference proceedings to identify applicable studies .

    SELECTION CRITERIA: Randomized controlled trials that assessed any type of TES, administered at home or in a clinical setting, compared to no treatment, a sham TES, other forms of nerve stimulation or any other pharmaceutical or non-pharmaceutical measures used to treat constipation in children were considered for inclusion.

    DATA COLLECTION AND ANALYSIS: Two authors independently assessed studies for inclusion, extracted data and assessed risk of bias of the included studies. We calculated the risk ratio (RR) and corresponding 95% confidence interval (CI) for categorical outcomes data and the mean difference (MD) and corresponding 95% CI for continuous outcomes.

    MAIN RESULTS: One study from Australia including 46 children aged 8 to 18 years was eligible for inclusion. There were multiple reports identified, including one unpublished report, that focused on different outcomes of the same study. The study had unclear risk of selection bias, high risks of performance, detection and attrition biases, and low risks of reporting biases.There were no significant differences between TES and the sham control group for the following outcomes: i).number of children with > 3 complete spontaneous bowel movements (CSBM) per week (RR 1.07, 95% CI 0.74 to 1.53, one study, 42 participants) (

    QUALITY OF EVIDENCE: very low, due to high risk of bias and serious imprecision ), ii). number of children with improved colonic transit assessed radiologically (RR 5.00, 95% CI 0.79 to 31.63; one study, 21 participants) (

    QUALITY OF EVIDENCE: very low, due to high risk of bias, serious imprecision and indirectness of the outcome). However, mean colonic transit rate, measured as the position of the geometric centre of the radioactive substance ingested along the intestinal tract, was significantly higher in children who received TES compared to sham (MD 1.05, 95% CI 0.36 to 1.74; one study, 30 participants) (

    QUALITY OF EVIDENCE: very low, due to high risk of bias , serious imprecision and indirectness of the outcome). There was no significant difference between the two groups in the number of children with improved soiling-related symptoms (RR 2.08, 95% CI 0.86 to 5.00; one study, 25 participants) (

    QUALITY OF EVIDENCE: very low, due to high risk of bias and serious imprecision). There was no significant difference in the number of children with improved quality of life (QoL) (RR 4.00, 95% CI 0.56 to 28.40; one study, 16 participants) (

    QUALITY OF EVIDENCE: very low, due to high risk of bias issues and serious imprecision ). There were also no significant differences in in self-perceived (MD 5.00, 95% CI -1.21 to 11.21) or parent-perceived QoL (MD -0.20, 95% CI -7.57 to 7.17, one study, 33 participants for both outcomes) (QUALITY OF EVIDENCE for both outcomes: very low, due to high risk of bias and serious imprecision). No adverse effects were reported in the included study.

    AUTHORS' CONCLUSIONS: The very low quality evidence gathered in this review does not suggest that TES provides a benefit for children with chronic constipation. Further randomized controlled trials assessing TES for the management of childhood constipation should be conducted. Future trials should include clear documentation of methodologies, especially measures to evaluate the effectiveness of blinding, and incorporate patient-important outcomes such as the number of patients with improved CSBM, improved clinical symptoms and quality of life.

  11. Lee WS, Jalaludin MY, Wong SY, Ong SY, Foo HW, Ng RT
    Pediatr Neonatol, 2019 02;60(1):12-18.
    PMID: 29680189 DOI: 10.1016/j.pedneo.2018.03.011
    BACKGROUND: To determine vitamin D status in children with chronic liver disease (CLD) in a tropical country.

    METHODS: Cross-sectional study in Malaysian children with CLD. Factors affecting serum vitamin D level (definition: deficient 

  12. Lee WS, Song ZL, Em JM, Chew KS, Ng RT
    Pediatr Neonatol, 2021 05;62(3):249-257.
    PMID: 33546933 DOI: 10.1016/j.pedneo.2021.01.002
    BACKGROUND: Primary endoscopic prophylaxis in pediatric gastroesophageal varices is not universally practiced. We aimed to determine the role of primary endoscopic prophylaxis in preventing variceal bleeding in gastroesophageal varices in children.

    METHODS: We reviewed all children with gastroesophageal varices seen in our unit from 2000 to 2019. Primary prophylaxis was defined as endoscopic procedure without a preceding spontaneous bleeding and secondary prophylaxis as preceded by spontaneous bleeding. High-risk varices were defined as presence of grade III esophageal varices, cardia gastric varices or cherry red spots on the varices. Outcome measures (spontaneous rebleeding within 3 months after endoscopic procedure, number of additional procedures to eradicate varices, liver transplant [LT], death) were ascertained.

    RESULTS: Sixteen of 62 (26%) patients (median [± S.D.] age at diagnosis = 5.0 ± 4.3 years) with varices had primary prophylaxis, 38 (61%) had secondary prophylaxis while 8 (13%) had no prophylaxis. No difference in the proportion of patients with high-risk varices was observed between primary (88%) and secondary (92%; P = 0.62) prophylaxis. As compared to secondary prophylaxis, children who had primary prophylaxis were significantly less likely to have spontaneous rebleeding (6% vs. 38%; P = 0.022) and needed significantly fewer repeated endoscopic procedures (0.9 ± 1.0 vs. 3.1 ± 2.5; P = 0.021). After 8.9 ± 5.5 years of follow-up, overall survival was 85%; survival with native liver was 73%. No statistical difference was observed in the eventual outcome (alive with native liver) between primary and secondary (71% vs. 78%, P = 0.78).

    CONCLUSION: Children with PHT who had primary prophylaxis had less subsequent spontaneous rebleeding and needed fewer additional endoscopic procedures as compared to secondary prophylaxis but did not have an improved eventual outcome. Screening endoscopy in all children who have signs of PHT and primary prophylaxis in high-risk esophageal varices should be considered before eventual LT.

  13. Lee WS, Azmi N, Ng RT, Ong SY, Ponnampalavanar SS, Mahadeva S, et al.
    Intest Res, 2017 Oct;15(4):524-528.
    PMID: 29142521 DOI: 10.5217/ir.2017.15.4.524
    Anti-tumor necrosis factor (anti-TNF) is highly effective in inflammatory bowel disease (IBD); however, it is associated with an increased risk of infections, particularly in older adults. We reviewed 349 patients with IBD, who were observed over a 12-month period, 74 of whom had received anti-TNF therapy (71 patients were aged <60 years and 3 were aged ≥60 years). All the 3 older patients developed serious infectious complications after receiving anti-TNFs, although all of them were also on concomitant immunosuppressive therapy. One patient developed disseminated tuberculosis, another patient developed cholera diarrhea followed by nosocomial pneumonia, while the third patient developed multiple opportunistic infections (Pneumocystis pneumonia, cryptococcal septicemia and meningitis, Klebsiella septicemia). All 3 patients died within 1 year from the onset of the infection(s). We recommend that anti-TNF, especially when combined with other immunosuppressive therapy, should be used with extreme caution in older adult patients with IBD.
  14. Loganathan T, Ng CW, Lee WS, Hutubessy RCW, Verguet S, Jit M
    Health Policy Plan, 2018 Mar 01;33(2):204-214.
    PMID: 29228339 DOI: 10.1093/heapol/czx166
    Cost-effectiveness thresholds (CETs) based on the Commission on Macroeconomics and Health (CMH) are extensively used in low- and middle-income countries (LMICs) lacking locally defined CETs. These thresholds were originally intended for global and regional prioritization, and do not reflect local context or affordability at the national level, so their value for informing resource allocation decisions has been questioned. Using these thresholds, rotavirus vaccines are widely regarded as cost-effective interventions in LMICs. However, high vaccine prices remain a barrier towards vaccine introduction. This study aims to evaluate the cost-effectiveness, affordability and threshold price of universal rotavirus vaccination at various CETs in Malaysia. Cost-effectiveness of Rotarix and RotaTeq were evaluated using a multi-cohort model. Pan American Health Organization Revolving Fund's vaccine prices were used as tender price, while the recommended retail price for Malaysia was used as market price. We estimate threshold prices defined as prices at which vaccination becomes cost-effective, at various CETs reflecting economic theories of human capital, societal willingness-to-pay and marginal productivity. A budget impact analysis compared programmatic costs with the healthcare budget. At tender prices, both vaccines were cost-saving. At market prices, cost-effectiveness differed with thresholds used. At market price, using 'CMH thresholds', Rotarix programmes were cost-effective and RotaTeq were not cost-effective from the healthcare provider's perspective, while both vaccines were cost-effective from the societal perspective. Using other CETs, both vaccines were not cost-effective at market price, from the healthcare provider's and societal perspectives. At tender and cost-effective prices, rotavirus vaccination cost ∼1 and 3% of the public health budget, respectively. Using locally defined thresholds, rotavirus vaccination is cost-effective at vaccine prices in line with international tenders, but not at market prices. Thresholds representing marginal productivity are likely to be lower than those reflecting human capital and individual preference measures, and may be useful in determining affordable vaccine prices.
  15. Lee GW, Chew KS, Wong SY, Chong SY, Ong SY, Lee WS
    J Paediatr Child Health, 2022 Nov;58(11):1972-1979.
    PMID: 35880617 DOI: 10.1111/jpc.16130
    AIM: Quality of life (QoL) in children with inflammatory bowel disease (IBD) is often impaired by underlying disease. We evaluated factors affecting health-related QoL (HRQoL) in Malaysian children with IBD.

    METHODS: A cross-sectional study using IMPACT-III questionnaires evaluating HRQoL in children aged 8-17 years with duration of IBD of ≥6 months was conducted. IMPACT-III, a validated instrument designed to measure HRQoL in children with IBD, was used. Higher IMPACT-III (maximum = 100) score indicates better HRQoL. Impact of socio-demographic and clinical factors of IBD on the HRQoL was evaluated. Paediatric Crohn's disease (CD) and ulcerative colitis (UC) activity indices were used to classify disease severity.

    RESULTS: A total of 75 children (UC = 44, CD = 41; mean (SD) age at diagnosis 8.2 (3.5) years) were interviewed at mean age of 12.8 (2.7) years. Mean IMPACT-III score was significantly lower in children with more severe disease (mild: 71.8 (13.6) vs. moderate: 65.5 (10.9) vs. severe: 46.3 (14.5); P 

  16. Cheang HK, Wong HT, Ho SC, Chew KS, Lee WS
    Singapore Med J, 2013 Apr;54(4):224-6.
    PMID: 23624451
    INTRODUCTION: This study aimed to assess the immune response in infants who received the three-shot hepatitis B vaccine in Malaysia.

    METHODS: Consecutive infants born between March 2002 and April 2010 who received three doses of hepatitis B vaccine at a community clinic in Malaysia were enrolled in the study. Screening for hepatitis B surface antigen (HBsAg) and antibody against HBsAg (anti-HBs) was performed after the completion of primary immunisation, at approximately one year of age.

    RESULTS: A total of 572 infants (median age 9.3 ± 2.7 months; range 6.3-48 months) were screened for immune response to hepatitis B vaccination - 553 (96.7%) infants had adequate levels of anti-HBs (≥ 10 IU/L). Of the 440 mothers whose HBsAg status was known, 14 (3.2%) were positive for HBsAg. None of the 14 infants who were born to HBsAg-positive mothers were positive for HBsAg, and all but one infant had anti-HBs level ≥ 10 IU/L. Gender, gestational age and maternal HBsAg status were not found to significantly affect the subsequent immune response in infants following vaccination.

    CONCLUSION: The proportion of Malaysian mothers who are positive for HBsAg remains high. The three-shot hepatitis B vaccine, given as part of universal vaccination against hepatitis B, provides adequate anti-HBs in the vast majority of infants in a community setting in Malaysia.
  17. Lee WS, Chan TL, Koh MT, Ariffin WA, Lin HP
    Singapore Med J, 2001 Nov;42(11):530-3.
    PMID: 11876380
    Two children with non-Hodgkin's lymphoma (NHL) as the presenting illness of acquired immunodeficiency syndrome (AIDS) are described. There was a delay in diagnosing the underlying AIDS in both cases. In the first case, an 18-month-old boy with stage IV, high-grade,T-cell NHL, the diagnosis of underlying AIDS was suspected only when he developed recurrent and profound opportunistic infection during chemotherapy. The second case, an eight-month-old female infant presented initially with hepatosplenomegaly and thrombocytopenia of undetermined cause. She had progressive abdominal distension and swelling of her right eye one year later due to high grade B-cell NHL. She was later found to be sero-positive for HIV during pre-chemotherapy screening. As the prevalence of HIV infection continues to increase, HIV infection should be considered in the differential diagnoses of childhood hepatosplenomegaly and thrombocytopenia, and as a possible underlying cause of childhood cancer, especially NHL.
  18. Tan KA, Lum SH, Yahya A, Krishnan S, Jalaludin MY, Lee WS
    Singapore Med J, 2019 Jun;60(6):303-308.
    PMID: 30556093 DOI: 10.11622/smedj.2018155
    INTRODUCTION: Endocrine dysfunction due to iron overload secondary to frequent blood transfusions is a common complication in children with transfusion-dependent thalassaemia (TDT). We ascertained the prevalence of endocrine dysfunction in children with TDT seen in a hospital setting in Malaysia.

    METHODS: We reviewed all patients with TDT who had ≥ 8 blood transfusions per year. Patients who had a history of stem cell transplantation, concurrent autoimmune diseases or were newly diagnosed to have TDT were excluded. Standard diagnostic criteria were used in the diagnosis of various endocrine dysfunctions.

    RESULTS: Of the 82 patients with TDT, 65% had at least one endocrine dysfunction. Short stature was the commonest (40.2%), followed by pubertal disorders (14.6%), hypoparathyroidism (12.3%), vitamin D deficiency (10.1%), hypocortisolism (7.3%), diabetes mellitus (5.2%) and overt hypothyroidism (4.9%). Subclinical hypothyroidism and pre-diabetes mellitus were seen in 13.4% and 8.6% of the patients, respectively. For children aged < 10 years, the prevalence of both thyroid dysfunction and hypoparathyroidism was 9.1%.

    CONCLUSION: Two-thirds of children with TDT experienced at least one endocrine dysfunction. Thyroid dysfunction and hypoparathyroidism may be missed if endocrine screening is only performed in children with TDT > 10 years of age. Close monitoring for endocrine dysfunction and hormonal therapy is essential to prevent long-term adverse outcomes.

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