Displaying publications 1 - 20 of 127 in total

  1. Yeap BH, Premnath N, Manjit S
    Med J Malaysia, 2005 Mar;60(1):89-90.
    PMID: 16250287
    The resurging interest in diagnostic laparoscopy has witnessed its increasing application in trauma surgery. Such unbridled enthusiasm has at times overlooked its shortcoming in the diagnosis and management of certain in abdominal injuries. We report and discuss one such conspicuous limitation and advocate that the use laparoscopy in abdominal trauma should be tempered with caution.
    Matched MeSH terms: Diagnostic Errors*
  2. Muthupalaniappen L, Siti Aishah MA, Wong YP, Jamil A
    Clin Ter, 2013 May-Jun;164(3):225-7.
    PMID: 23868624 DOI: 10.7417/CT.2013.1553
    Animal inflicted wounds, left untreated may result in chronic bacterial or fungal infection. Clinical features of these infections may overlap leading to a delay in diagnosis and treatment. We report a case of chronic non-healing cat bite wound treated with several antibiotics without improvement. Later patient developed the classical "sporotrichoid spread" and a presumptive diagnosis of sporotrichosis was made. Laboratory investigation for fungal culture and skin biopsy failed to identify the underlying pathogen. A trial of oral antifungal agent resulted in complete recovery of the lesions implicating fungus as the causative pathogen. Physicians should have a high index of suspicion for fungal infections when managing animal inflicted wounds.
    Matched MeSH terms: Diagnostic Errors
  3. Maurer HJ
    J R Soc Med, 1993 Aug;86(8):481.
    PMID: 8078052
    Matched MeSH terms: Diagnostic Errors
  4. Sayuti, R., Baharudin, A., Amran, M.
    Submasseteric abscess is unusual in the head and neck region. Patients with this condition may be misdiagnosed as a parotid abscess due to the similarities in their presentation. Awareness and due recognition should be given to this unusual problem.
    Matched MeSH terms: Diagnostic Errors
  5. Ng, Beng Kwang, Lim, PS, Shafiee MN, Abdul Kadir AK, Nordashima AS, Omar MH
    We report a case of rare, Mullerian vaginal cyst with intracystic haemorrhage in the absence of endometrial components. To date, this is the second case reported in the literature. A 51-year-old post-menopausal woman with history of anterior vaginal wall cyst was misdiagnosed to have cystocele. The cyst was excised and the content was old blood mixed with mucous. Histopathological examination revealed a Mullerian vaginal cyst without endometrial component. Thus, diagnosis and management of vaginal cyst was revisited and discussed.
    Matched MeSH terms: Diagnostic Errors
  6. Sriraam N, Eswaran C
    J Med Syst, 2006 Dec;30(6):439-48.
    PMID: 17233156
    Two-stage lossless data compression methods involving predictors and encoders are well known. This paper discusses the application of context based error modeling techniques for neural network predictors used for the compression of EEG signals. Error modeling improves the performance of a compression algorithm by removing the statistical redundancy that exists among the error signals after the prediction stage. In this paper experiments are carried out by using human EEG signals recorded under various physiological conditions to evaluate the effect of context based error modeling in the EEG compression. It is found that the compression efficiency of the neural network based predictive techniques is significantly improved by using the error modeling schemes. It is shown that the bits per sample required for EEG compression with error modeling and entropy coding lie in the range of 2.92 to 6.62 which indicates a saving of 0.3 to 0.7 bits compared to the compression scheme without error modeling.
    Matched MeSH terms: Diagnostic Errors/prevention & control*
  7. Lewiecki EM, Binkley N, Morgan SL, Shuhart CR, Camargos BM, Carey JJ, et al.
    J Clin Densitom, 2016 Apr-Jun;19(2):127-40.
    PMID: 27020004 DOI: 10.1016/j.jocd.2016.03.003
    Dual-energy X-ray absorptiometry (DXA) is a technology that is widely used to diagnose osteoporosis, assess fracture risk, and monitor changes in bone mineral density (BMD). The clinical utility of DXA is highly dependent on the quality of the scan acquisition, analysis, and interpretation. Clinicians are best equipped to manage patients when BMD measurements are correct and interpretation follows well-established standards. Poor-quality acquisition, analysis, or interpretation of DXA data may mislead referring clinicians, resulting in unnecessary diagnostic evaluations, failure to evaluate when needed, inappropriate treatment, or failure to provide medical treatment, with potentially ineffective, harmful, or costly consequences. Misallocation of limited healthcare resources and poor treatment decisions can be minimized, and patient care optimized, through meticulous attention to DXA instrument calibration, data acquisition and analysis, interpretation, and reporting. This document from the International Society for Clinical Densitometry describes quality standards for BMD testing at DXA facilities worldwide to provide guidance for DXA supervisors, technologists, interpreters, and clinicians. High-quality DXA testing is necessary for correct diagnostic classification and optimal fracture risk assessment, and is essential for BMD monitoring.
    Matched MeSH terms: Diagnostic Errors/prevention & control*
  8. Mohd Norsuddin N, Mello-Thoms C, Reed W, Rickard M, Lewis S
    Br J Radiol, 2017 Aug;90(1076):20170048.
    PMID: 28621548 DOI: 10.1259/bjr.20170048
    OBJECTIVE: This study investigated whether certain mammographic appearances of breast cancer are missed when radiologists read at lower recall rates.

    METHODS: 5 radiologists read 1 identical test set of 200 mammographic (180 normal cases and 20 abnormal cases) 3 times and were requested to adhere to 3 different recall rate conditions: free recall, 15% and 10%. The radiologists were asked to mark the locations of suspicious lesions and provide a confidence rating for each decision. An independent expert radiologist identified the various types of cancers in the test set, including the presence of calcifications and the lesion location, including specific mammographic density.

    RESULTS: Radiologists demonstrated lower sensitivity and receiver operating characteristic area under the curve for non-specific density/asymmetric density (H = 6.27, p = 0.04 and H = 7.35, p = 0.03, respectively) and mixed features (H = 9.97, p = 0.01 and H = 6.50, p = 0.04, respectively) when reading at 15% and 10% recall rates. No significant change was observed on cancer characterized with stellate masses (H = 3.43, p = 0.18 and H = 1.23, p = 0.54, respectively) and architectural distortion (H = 0.00, p = 1.00 and H = 2.00, p = 0.37, respectively). Across all recall conditions, stellate masses were likely to be recalled (90.0%), whereas non-specific densities were likely to be missed (45.6%).

    CONCLUSION: Cancers with a stellate mass were more easily detected and were more likely to continue to be recalled, even at lower recall rates. Cancers with non-specific density and mixed features were most likely to be missed at reduced recall rates. Advances in knowledge: Internationally, recall rates vary within screening mammography programs considerably, with a range between 1% and 15%, and very little is known about the type of breast cancer appearances found when radiologists interpret screening mammograms at these various recall rates. Therefore, understanding the lesion types and the mammographic appearances of breast cancers that are affected by readers' recall decisions should be investigated.

    Matched MeSH terms: Diagnostic Errors/statistics & numerical data*
  9. Boo WH, Rajan P, Ching SM, Lee PY
    Malays Fam Physician, 2015;10(2):45-8.
    PMID: 27099660 MyJurnal
    Juvenile recurrent respiratory papillomatosis (JRRP) is a rare condition. The varied presentation of this condition predisposes to misdiagnosis and potential life-threatening airway obstruction. In this paper, we have reported a case of JRRP presenting as severe respiratory distress and consequently mistreated as asthmatic attack culminating in a near fatal acute airway obstruction.
    Matched MeSH terms: Diagnostic Errors
  10. Ng SY
    Indian J Dermatol, 2015 Jul-Aug;60(4):420.
    PMID: 26288431 DOI: 10.4103/0019-5154.160515
    A 3-month-old female patient with a giant ulcerated nodule over the back since birth was diagnosed as congenital giant juvenile xanthogranuloma (JXG) based on clinical and histopathological examination. Congenital giant JXG with ulceration at birth is a rare presentation of JXG and commonly misdiagnosed. This case emphasizes the importance of being aware of the myriad presentations of JXG in order to make a correct diagnosis and avoid unnecessary investigations or treatment.
    Matched MeSH terms: Diagnostic Errors
  11. Vairavan, N., Rohaizak, M., Hairol, O.
    Appendicitis within an Amyand's hernia is rare; when it occurs it is often misdiagnosed as a strangulated inguinal hernia. Management of these cases needs to be individualized according to the presentation. In uncomplicated cases, we recommend concurrent appendectomy and darning repair of the hernia. We present such a case and review the related literature.
    Matched MeSH terms: Diagnostic Errors
  12. Chien, K.Y.
    A 76 year-old lady with late-onset schizophrenia was admitted with hypoglycaemia. She was later found to have a pancreatic tail insulinoma, confirmed biochemically and radiologically. She is treated medically with Diazoxide while awating laparascopic enucleation of the pancreatic tumour. The question remains if neuroglycopenia aggravates co-existing schizophrenia or if insulinoma-induced neuroglycopenia had been misdiagnosed as schizophrenia.
    Matched MeSH terms: Diagnostic Errors
  13. Kumar S, Talib A, Gul YA
    Occult mucosal prolapse syndrome, also known as the solitary rectal ulcer syndrome (SRUS) is uncommon. Due to its rarity, a misdiagnosis of rectal cancer is occasionally made as the clinical features may closely mimic those of rectal malignancy. We hereby report a case of SRUS in an elderly Malay gentleman who had primary symptoms of rectal bleeding with associated anaemia and anorectal pain. Even though the clinical features and specific investigations suggested the presence of rectal cancer, preoperative histological analysis failed to confirm this. In view of the intractable symptoms and rectal bleeding, a low anterior resection was performed. A detailed examination of the resected specimen intraoperatively, together with the histological report and awareness of this condition avoided the performance of an abdomino-perineal resection. Incidently coexisting malrotation of the sigmoid colon to the right side was discovered during surgery. This finding, which may be coincidental, has not been reported thus far in the medical literature. The patient's symptoms improved postoperatively with a subsequent uneventful recovery. A brief literature review supplements this case report.
    Keywords: Mucosal prolapse syndrome, solitary rectal ulcer syndrome, rectal cancer
    Matched MeSH terms: Diagnostic Errors
  14. Sreeramareddy CT, Rahman M, Harsha Kumar HN, Shah M, Hossain AM, Sayem MA, et al.
    PMID: 25104297 DOI: 10.1186/1472-6947-14-67
    BACKGROUND: To estimate the amount of regret and weights of harm by omission and commission during therapeutic decisions for smear-negative pulmonary Tuberculosis.
    METHODS: An interviewer-administered survey was done among young physicians in India, Pakistan and Bangladesh with a previously used questionnaire. The physicians were asked to estimate probabilities of morbidity and mortality related with disease and treatment and intuitive weights of omission and commission for treatment of suspected pulmonary Tuberculosis. A comparison with weights based on literature data was made.
    RESULTS: A total of 242 physicians completed the interview. Their mean age was 28 years, 158 (65.3%) were males. Median probability (%) of mortality and morbidity of disease was estimated at 65% (inter quartile range [IQR] 50-75) and 20% (IQR 8-30) respectively. Median probability of morbidity and mortality in case of occurrence of side effects was 15% (IQR 10-30) and 8% (IQR 5-20) respectively. Probability of absolute treatment mortality was 0.7% which was nearly eight times higher than 0.09% reported in the literature data. The omission vs. commission harm ratios based on intuitive weights, weights calculated with literature data, weights calculated with intuitive estimates of determinants adjusted without and with regret were 3.0 (1.4-5.0), 16 (11-26), 33 (11-98) and 48 (11-132) respectively. Thresholds based on pure regret and hybrid model (clinicians' intuitive estimates and regret) were 25 (16.7-41.7), and 2(0.75-7.5) respectively but utility-based thresholds for clinicians' estimates and literature data were 2.9 (1-8.3) and 5.9 (3.7-7.7) respectively.
    CONCLUSION: Intuitive weight of harm related to false-negatives was estimated higher than that to false-positives. The mortality related to treatment was eightfold overestimated. Adjusting expected utility thresholds for subjective regret had little effect.
    Matched MeSH terms: Diagnostic Errors/mortality; Diagnostic Errors/statistics & numerical data*
  15. Jaafar R, Mohamad I
    Malays Fam Physician, 2014;9(1):25-7.
    PMID: 25606294 MyJurnal
    Unilateral vocal cord palsy secondary to thoracic aortic aneurysm is a rare occurrence. Direct compression of the enlarging thoracic aneurysm on the left recurrent laryngeal nerve causes neuronal injury of the nerve, which is manifested as hoarseness. We present a rare case of unilateral vocal cord palsy in a 60-year-old healthy gentleman caused by a large thoracic aortic aneurysm. This rare presentation, with a serious underlying pathology might be misdiagnosed or delayed. Therefore, it is important for us to have high index of suspicion in cases with a rare presentation such as this.
    Matched MeSH terms: Diagnostic Errors
  16. Teoh JW, Goh BS, Shahizon Azura MM, Siti Aishah MA, Nor Hafliza MS
    Med J Malaysia, 2014 Jun;69(3):146-7.
    PMID: 25326360 MyJurnal
    hemangiopericytoma (hPC) is a rare tumor by definition and intracranial hPC makes up to less than one percent of all the intracranial tumors. It is a dural base tumor and its clinical features and radiological findings are similar to meningiomas. however, cerebellopontine angle hemangipericytoma had only been reported twice and would almost always be misdiagnosed. definite diagnosis is important, as the treatment of hPC is different from meningiomas and acoustic neuromas. we report a case of a young female who presented with atypical symptoms of left cerebellopontine angle mass. A literature review of the nature of the disease, radiological findings, immunohistochemical features and treatment options of the tumor are described.
    Matched MeSH terms: Diagnostic Errors
  17. Barman P, Kaur R, Kumar K
    Indian J Crit Care Med, 2013 Jan;17(1):46-8.
    PMID: 23833477 DOI: 10.4103/0972-5229.112146
    Melioidosis is endemic in the South Asian regions, like Thailand, Singapore Malaysia and Australia. The disease is more pronounced in the southern part of the country. It is caused by Burkholderia pseudomallei which causes systemic involvement, morbidity and mortality associated with the disease is high. Due to highly varied clinical presentation, and low general awareness this infection is largely underdiagnosed and under reported in our country. Most laboratories in the country still rely on conventional culturing methods with their low sensitivity, adding to the under reporting. To enhance physician awareness we describe here two cases who presented to our institute after months of misdiagnosis.
    Matched MeSH terms: Diagnostic Errors
  18. Mohmad Z, Kah TA, Yong KC, Abdul Halim WH, Kong Yong T
    Clinics and practice, 2011 Jul 01;1(3):e60.
    PMID: 24765321 DOI: 10.4081/cp.2011.e60
    The clinical features, autofluorescence, B-scan ultrasonography, optical coherence tomography and fluorescein angiography of the lesion were described. Multiple investigation modalities are needed to confirm the benign nature of the lesion. Careful evaluation and follow-up is crucial to avoid misdiagnosis and erroneous management.
    Matched MeSH terms: Diagnostic Errors
  19. Sinniah B, Sheikh Omar AR, Lee CC, Surin J, Subramaniam K
    Med J Malaysia, 1994 Dec;49(4):419-23.
    PMID: 7674981
    A 16-year-old female from Rantau Panjang, Kelantan reported having diarrhoea for three months. During this period, she lost 15 lb in weight and was treated with antibiotics and anti-spasmodic tablets with no improvement. Stool examinations by private laboratories revealed "worm-like eggs". She was treated for worms with mebendazole which helped to reduce the symptoms but not completely. The patient continued passing out the abnormal "worm-like eggs" which were later identified as pollen grains.
    Matched MeSH terms: Diagnostic Errors
  20. Sukumaran K, Chandran S, Visvaraja S, Couper NT, Tan PE
    Med J Malaysia, 1984 Dec;39(4):317-9.
    PMID: 6544942
    A case is presented to illustrate the difficulties
    encountered in the clinical diagnosis of an intraocular mass. The fundus was not visible ophthalmoscopically because of opaque media. The anterior surface of the iris showed three discrete hyperpigmented nodular patches. Ultrasound showed an intraocular mass occupying half the posterior segment. The eye did not have useful vision and was enucleated after a clinical diagnosis of malignant melanoma of the choroid was made. The eye did not contain a melanoma but an organised blood clot after an extensive vitreous haemorrhage because of systemic hypertension.
    Matched MeSH terms: Diagnostic Errors
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