Displaying publications 61 - 80 of 91 in total

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  1. Abidin ZAZ, Hayati F, Tan GH, Goh EH, Hafidzul J, Zulkifli MZ
    J Coll Physicians Surg Pak, 2018 Mar;28(3):S69-S70.
    PMID: 29482714 DOI: 10.29271/jcpsp.2018.03.S69
    A 46-year gentleman presented with a left-sided lumbar region pain without fever or dysuria. He denied episodes of acute urinary retention. There was a hard mass at the distal urethra with normal laboratory blood tests. Computed tomography urogram revealed a concurrent left renal staghorn calculus and large distal urethral stone. The urethral stone was fragmented via endourologic technique successfully. We report a case of a non-obstructing large urethral calculus in a gentleman with concurrent left renal staghorn calculus and discuss the literature review.
    Matched MeSH terms: Urinary Calculi/surgery; Staghorn Calculi/diagnostic imaging*
  2. Shahar S, Lim KP, Mohamad M
    J ASEAN Fed Endocr Soc, 2019;34(2):229-232.
    PMID: 33442162 DOI: 10.15605/jafes.034.02.17
    Eight cases of parathyroid carcinoma were identified (8 females; median age 45 years, range 28-72). Half of whom were diagnosed preoperatively. Hypercalcemic symptoms were seen in 87.5% of the patients and the main complication was nephrolithiasis. At presentation, the median calcium was 3.675 mmol/L, median phosphate of 0.68 mmol/L, median intact parathyroid hormone (iPTH) was 211 pmol/L. Five patients had regional nodes metastasis and 1 had distant metastasis to the lungs. Parathyroid gland invasion to adjacent structures was seen in 62.5% of cases while another 62.5% showed capsular or vascular infiltration on histology with median tumour size of 3.2 cm. Recurrent hypercalcemia occurred in 50% of the patients with median time of recurrence of 21 months. In this case series, we found that patients with severe hypercalcemia and high iPTH also exhibited a high index suspicion of PC.
    Matched MeSH terms: Kidney Calculi
  3. Muhamad S, Sowtali SN, Arifin SRM, Islah MAR, Mohd Shukri NA
    J Hum Nutr Diet, 2023 Oct;36(5):2060-2072.
    PMID: 37515409 DOI: 10.1111/jhn.13215
    BACKGROUND: Dietary habit is one of the most important methods to prevent and treat urinary stones. However, only limited evidence of the experiences of dietary management among urinary stone patients in Malaysia is available. This study aimed to explore participants' current dietary practices after the diagnosis of urinary stones and to identify the factors that facilitate their dietary changes.

    METHODS: A qualitative study with purposive sampling was conducted using face-to-face semistructured interviews. A total of 20 participants from a tertiary general hospital in Kuantan, Malaysia, were recruited in this study. Data were analysed using framework analysis.

    RESULTS: Two themes emerged from the analysis. The first theme explained the changes in the dietary practice of the participants postdiagnosis. The second theme revealed that the participants' dietary changes were greatly influenced by personal factors and external support from professionals, family and peers.

    CONCLUSIONS: Urinary stone patients highlighted the fear of complications, self-determination and knowledge of nutrition as the main drivers of their dietary change postdiagnosis. Emphasising proper nutritional care by assessing and evaluating dietary self-management among patients can facilitate effective self-care in stone prevention management.

    Matched MeSH terms: Urinary Calculi*
  4. Muhammed Shameem KM, Chawla A, Mallya M, Barik BK, Unnikrishnan VK, Kartha VB, et al.
    J Biophotonics, 2018 06;11(6):e201700271.
    PMID: 29411942 DOI: 10.1002/jbio.201700271
    Presence of renal-calculi (kidney stones) in human urethra is being increasingly diagnosed over the last decade and is considered as one of the most painful urological disorders. Accurate analysis of such stones plays a vital role in the evaluation of urolithiasis patients and in turn helps the clinicians toward exact etiologies. Two highly complementary laser-based analytical techniques; laser-induced breakdown spectroscopy (LIBS) and micro-Raman spectroscopy have been used to identify the chemical composition of different types of renal-calculi. LIBS explores elemental characteristics while Raman spectroscopy provides molecular details of the sample. This complete information on the sample composition might help clinicians to identify the key aspects of the formation of kidney stones, hence assist in therapeutic management and to prevent recurrence. The complementarity of both techniques has been emphasized and discussed. LIBS spectra of different types of stones suggest the probable composition of it by virtue of the major, minor and trace elements detected from the sample. However, it failed to differentiate the crystalline form of different hydrates of calcium oxalate stone. This lacuna was overcome by the use of Raman spectroscopy and these results are compared with conventional chemical analysis.
    Matched MeSH terms: Kidney Calculi
  5. Sharouny H, Omar RB
    Iran Red Crescent Med J, 2014 Sep;16(9):e7882.
    PMID: 25593739 DOI: 10.5812/ircmj.7882
    INTRODUCTION: Sialolithiasis is the most common disease of salivary glands. Sialography is particularly important for the assessment of the outflow tract and in diagnosing obstructive salivary gland lesions including calculi.

    CASE PRESENTATION: We report on a 38-year-old female with sialolithiasis whom had Wharton's duct perforation, complicating the sialography. She was treated conservatively with a course of co-amoxiclav, oral prednisolone for three days and pain-killers. The patient was clinically well on follow-up reassessments at the end of the first week and three weeks post procedure.

    CONCLUSIONS: Perforation of salivary duct complicating the sialography is rare. Awareness of this potential complication and utilizing a good sialography technique need to be advocated amongst radiologists. Response to treatment by conservative management is preferred as illustrated in this case.

    Matched MeSH terms: Salivary Gland Calculi
  6. Taguchi K, Cho SY, Ng AC, Usawachintachit M, Tan YK, Deng YL, et al.
    Int J Urol, 2019 07;26(7):688-709.
    PMID: 31016804 DOI: 10.1111/iju.13957
    The Urological Association of Asia, consisting of 25 member associations and one affiliated member since its foundation in 1990, has planned to develop Asian guidelines for all urological fields. The field of stone diseases is the third of its guideline projects. Because of the different climates, and social, economic and ethnic environments, the clinical practice for urinary stone diseases widely varies among the Asian countries. The committee members of the Urological Association of Asia on the clinical guidelines for urinary stone disease carried out a surveillance study to better understand the diversity of the treatment strategy among different regions and subsequent systematic literature review through PubMed and MEDLINE database between 1966 and 2017. Levels of evidence and grades of recommendation for each management were decided according to the relevant strategy. Each clinical question and answer were thoroughly reviewed and discussed by all committee members and their colleagues, with suggestions from expert representatives of the American Urological Association and European Association of Urology. However, we focused on the pragmatic care of patients and our own evidence throughout Asia, which included recent surgical trends, such as miniaturized percutaneous nephrolithotomy and endoscopic combined intrarenal surgery. This guideline covers all fields of stone diseases, from etiology to recurrence prevention. Here, we present a short summary of the first version of the guideline - consisting 43 clinical questions - and overview its key practical issues.
    Matched MeSH terms: Urinary Calculi/diagnosis*; Urinary Calculi/drug therapy; Urinary Calculi/prevention & control; Urinary Calculi/surgery*
  7. Law YXT, Shen L, Khor VWS, Chen W, Chen WJK, Durai P, et al.
    Int J Urol, 2022 Dec;29(12):1488-1496.
    PMID: 36070249 DOI: 10.1111/iju.15023
    OBJECTIVES: To identify predictive factors for the development of sepsis/septic shock postdecompression of calculi-related ureteric obstruction using the Sequential Organ Failure Assessment (SOFA) score and to compare clinical outcomes and odd risk ratios of patients developing sepsis/septic shock following the insertion of percutaneous nephrostomy (PCN) versus insertion of retrograde ureteral stenting (RUS).

    METHODS: Clinico-epidemiological data of patients who underwent PCN and/or RUS in two institutions for calculi-related ureteric obstruction were retrospectively collected from January 2014 to December 2020.

    RESULTS: 537 patients (244 patients in PCN group, 293 patients in RUS group) from both institutions were eligible for analysis based on inclusion and exclusion criteria. Patients with PCN were generally older, had poorer Eastern Cooperative Oncology Group status, and larger obstructive ureteral calculi compared to patients with RUS. Patients with PCN had longer durations of fever, the persistence of elevated total white cell and creatinine, and longer hospitalization stays compared with patients who had undergone RUS. RUS up-front has more unsuccessful interventions compared with PCN. There were no significant differences in the change in SOFA score postintervention between the two interventions. In multivariate analysis, the higher temperature just prior to the intervention (adjusted odds ratio [OR]: 2.039, p = 0.003) and Cardiovascular SOFA score of 1 (adjusted OR:4.037, p = 0.012) were significant independent prognostic factors for the development of septic shock postdecompression of ureteral obstruction.

    CONCLUSIONS: Our study reveals that both interventions have similar overall risk of urosepsis, septic shock and mortality rate. Despite a marginally higher risk of failure, RUS should be considered in patients with lower procedural risk. Patients going for PCN should be counseled for a longer stay. Post-HDU/-ICU monitoring, inotrope support postdecompression should be considered for patients with elevated temperature within 1 h preintervention and cardiovascular SOFA score of 1.

    Matched MeSH terms: Ureteral Calculi*
  8. Das Gupta E, Sakthiswary R, Lee SL, Wong SF, Hussein H, Gun SC
    Int J Rheum Dis, 2018 Mar;21(3):705-709.
    PMID: 27456670 DOI: 10.1111/1756-185X.12918
    AIM: The main objective of this study is to elucidate the clinical significance of the SLC2A9/GLUT9 rs11722228 polymorphism among male gout patients.
    METHOD: We consecutively recruited all newly diagnosed male gout patients who were treatment-naive from the rheumatology outpatient clinics of two Malaysian hospitals. Age-matched healthy male adults were employed as controls. All subjects were tested for the SLC2A9/GLUT9 rs11722228 genotypes, serum uric acid (SUA), urine uric acid and creatinine levels. All gout subjects were examined for the presence of tophi and sonographically screened for renal calculi.
    RESULTS: A total of 73 male gout patients and 73 age-matched healthy male adults were recruited in this study. The genotypic frequencies of SLC2A9/GLUT9 rs1172228 did not differ significantly between the gout cases and the healthy controls. The gout subjects with the CC genotype had significantly higher SUA levels (P = 0.002), family history of gout (P < 0.050) and the occurrence of renal calculi (P = 0.026). The SUA-adjusted odds ratios (OR) of the occurrence of renal calculi in the CC genotype (OR = 1 [reference]) was significantly higher than the CT genotype (OR = 0.338, 95%CI: 0.141-0.813) and the TT genotype (OR = 0.271, 95%CI: 0.086-0.854).
    CONCLUSIONS: The genotypic distribution of SLC2A9/GLUT9 rs1172228 in male gout patients did not differ significantly from that of healthy male controls. However, the CC genotype in gout had significant associations with higher levels of SUA, renal calculi and a positive family history of gout.
    Study site: Rheumatology clinic, Tuanku Jaafar Hospital, Malaysia and Putrajaya Hospital, Malaysia
    Matched MeSH terms: Kidney Calculi/blood; Kidney Calculi/genetics*; Kidney Calculi/urine
  9. Lau WH, Leong WS, Ismail Z, Gam LH
    Int J Biol Sci, 2008 Aug 04;4(4):215-22.
    PMID: 18695745
    Kidney stone disease affects 1 - 20% of the general population. At present, the diagnosis of a stone is done using radiography method when noticeable symptoms appeared. We developed a non-invasive quantitative assay for urinary THP, namely ELISA; whereby our previous study and other reports had shown the usefulness of THP as biomarker for kidney stone disease. Since urine is biological fluid that is easily obtainable, this method could be used as a screening assay for kidney stone prior to confirmation with radiography. The ELISA gave assay linearity r(2) > 0.999 within the range of 109 ng/mL to 945 ng/mL THP. Assay precisions were < 4% (C.V.) for repeatability and < 5% (C.V.) for reproducibility. Assay accuracy range from 97.7% to 101.2% at the various THP concentrations tested. Assay specificity and sensitivity were 80% and 86%, respectively. The cut-off points at P < 0.05 were 37.0 and 41.2 mug/mL for male and female, respectively. The assay is cost effective and rapid whereby the cost for assaying each urine sample in duplicate is approximately USD0.35 and within 5 hours, 37 samples can be assayed alongside full range of standards and 3 QC samples in each plate. Furthermore, sample preparation is relatively easy where urine sample was diluted 10 times in TEA buffer. The usability of the ELISA method for diagnosis of kidney stone disease is evaluated with 117 healthy subjects and 58 stone formers.
    Matched MeSH terms: Kidney Calculi/diagnosis*; Kidney Calculi/urine*
  10. Kodama H, Ohno Y
    Hinyokika Kiyo, 1989 Jun;35(6):923-34.
    PMID: 2678977
    In this paper, urolithiasis is remarked from the standpoint of descriptive epidemiology, which examines the frequency distribution of a given disease in a population in terms of time, place and personal characteristics with an aim of identifying risk factors or some clues to the etiology. Some descriptive epidemiological features of urolithiasis are summarized. Prevalence rate is around 4% (4-15% in males and 4-8% in females), and incidence rate varies from area to area: 53.2 per 100,000 population in 1975 in Japan, 364 in 1976 in Malaysia, and 540 in 1979 in West Germany. Prevalence and/or incidence rates have, in general, increased in the developed countries since World War II and in the developing countries as well, where upward trends are quite analogous to the trends observed in the nineteenth century in Europe. Recurrence rate, which is much higher in males than in females, ranges from 31% to 75%, depending on the follow-up periods. In the industrialized countries, upper urinary (renal and ureteral) stones account for more than 90% of total stones, which are ordinarily calcium complexes in composition. More common in the developing countries are lower urinary (bladder and urethral) stones, frequently composed of magnesium ammonium phosphate, which indicates a close association with urinary tract infections. Variations in frequency are evident by season and by region within a country. Age and sex differentials in urinary stone formers are substantial: more common in males 30-40 years old in the industrialized countries and in children under 10 years old in the developing countries. Racial differentials are also noted; blacks appear to suffer less frequently than whites. Stone formers experience more frequent episodes of stone formation in their family members, particularly father and brothers, than non-stone formers. These findings on racial differentials and family preponderance suggest the possible relevance of genetic factors in stone formation. Stone formers are more likely to be occupationally sedentary and socially affluent. This observation and differentials by age and sex suggest the probable relevance of lifestyle and environmental factors in stone formation. Epidemiological factors incriminated for stone formation will be discussed in a separate paper.
    Matched MeSH terms: Urinary Calculi/genetics; Urinary Calculi/epidemiology*
  11. Mahadeva S, Prabakharan R, Goh KL
    Gastrointest Endosc, 2003 Aug;58(2):279-82.
    PMID: 12872105
    Hepatolithiasis (intrahepatic stones) is common in Asian patients. Hepatolithiasis with intrahepatic strictures and sharp ductal angulation poses a particularly difficult management problem.
    Matched MeSH terms: Calculi/therapy*
  12. Hasan AM, Jalab HA, Ibrahim RW, Meziane F, Al-Shamasneh AR, Obaiys SJ
    Entropy (Basel), 2020 Sep 15;22(9).
    PMID: 33286802 DOI: 10.3390/e22091033
    Brain tumor detection at early stages can increase the chances of the patient's recovery after treatment. In the last decade, we have noticed a substantial development in the medical imaging technologies, and they are now becoming an integral part in the diagnosis and treatment processes. In this study, we generalize the concept of entropy difference defined in terms of Marsaglia formula (usually used to describe two different figures, statues, etc.) by using the quantum calculus. Then we employ the result to extend the local binary patterns (LBP) to get the quantum entropy LBP (QELBP). The proposed study consists of two approaches of features extractions of MRI brain scans, namely, the QELBP and the deep learning DL features. The classification of MRI brain scan is improved by exploiting the excellent performance of the QELBP-DL feature extraction of the brain in MRI brain scans. The combining all of the extracted features increase the classification accuracy of long short-term memory network when using it as the brain tumor classifier. The maximum accuracy achieved for classifying a dataset comprising 154 MRI brain scan is 98.80%. The experimental results demonstrate that combining the extracted features improves the performance of MRI brain tumor classification.
    Matched MeSH terms: Calculi
  13. Nurhafizah Ahmad, Siti Asmah Mohamed, Ahmad Zia Ul-Saufie, Hasfazilah Ahmat, Fadzilawani Astifar Alias
    ESTEEM Academic Journal, 2020;16(1):38-46.
    MyJurnal
    In today’s digital era, it is possible to use the latest technology to improve student attendance and performance. The purpose of the present study is to determine the relationship between absenteeism and academic performance among Calculus students, as well as to measure the impact of class absence on the student’s final exam scores. Based on this, the use of appropriate
    strategy was employed, which is the mobile attendance application to reduce absenteeism among students in higher educational institution. The selection of sample was based on cluster sampling, involving the selection of 87 repeater students. The data collected were analyzed using quartile
    regression and independent sample t-test. The result of the findings revealed that the class absence has an impact on the student’s final exam scores. This is because, if the student was absences by 1 class, the final exam score is expected to decrease on average by 1.89%. Hence, findings show that the percentage of absences for the students with manual attendance was higher
    than the percentage of absences for the students with mobile attendance application. The application can help to reduce absenteeism by reminding students about recent attendance records.
    Matched MeSH terms: Calculi
  14. Pandey V, Salam SA, Moda A, Agarwal P, Nath S, Pulikkotil SJ
    Dent Res J (Isfahan), 2015 11 26;12(5):461-8.
    PMID: 26604961
    BACKGROUND: Use of smokeless tobacco in the form of moist snuff placed in the oral cavity is popular in rural India. The aim of the present cross-sectional study was to determine the effect of snuff on periodontitis by assessing interleukin (IL)-1 β and IL-8 levels in gingival crevicular fluid.

    MATERIALS AND METHODS: A total of 60 subjects were selected for this study. 40 subjects presented with periodontitis, which included 20 snuff users (SP) and 20 nonsnuff users (NS). 20 periodontally healthy patients formed the controls (healthy control: HC). The clinical parameters recorded were gingival index (GI), plaque index, calculus index, bleeding on probing (BOP), probing depth (PD), recession (RC), and clinical attachment level (CAL). The IL-1 β and IL-8 levels were assessed through enzyme-linked immunosorbent assay (Quantikine(®)). Analysis of variance (ANOVA), post-hoc Tukey's, Kruskal-Walli's ANOVA and Mann-Whitney test was used for comparison among groups and P > 0.05 was considered statistically significant.

    RESULTS: No significant difference was seen in levels of IL-1 β and IL-8 between SP and NS groups (P = 0.16, 0.97). However, both the periodontitis groups (SP and NS) had increased IL-β levels when compared to HC group (P = 0.01, 0.001). The snuff users showed significant increase in GI, BOP, RC, and CAL when compared with NS (P = 0.002, 0.001, 0.012, 0.002) whereas NS group had significant increase in PD (P = 0.003).

    CONCLUSION: Within the limitations of this study, use of snuff does not affect the host inflammatory response associated with periodontitis and leads to RC and increased CAL due to local irritant effect.

    Matched MeSH terms: Calculi
  15. Thong HK, Mohamad Mahbob H, Sabir Husin Athar PP, Tengku Kamalden TMI
    Cureus, 2020 Dec 19;12(12):e12163.
    PMID: 33489575 DOI: 10.7759/cureus.12163
    Sialolithiasis is a commonly encountered disease of the salivary glands, reported to represent up to 30% of all salivary gland diseases. However, the condition is rarely encountered in the pediatric population. The formation of a salivary stone is believed to be secondary to the deposition of calcium salts around a nidus. The formation of a nidus is commonly associated with desquamated epithelial or sloughing from a recent bacterial infection. Patients with submandibular sialolithiasis usually present with acute swelling over the neck associated with pain, fever, and purulent intraoral discharge. Neglected and poorly treated acute infection may progress to life-threatening abscess formation. Here we are describing our encounter with a 10-year-old boy with recurrent submandibular sialolithiasis. He was initially treated with conservative measures and antibiotics regimen. Failure of medical treatment and recurring symptoms led to submandibular gland excision followed by a full recovery.
    Matched MeSH terms: Salivary Gland Calculi
  16. Chong TH, Asyraf MZ, Hayati F, Azizan N, Sahid NA, Ting JRS, et al.
    Case Rep Surg, 2018;2018:4606259.
    PMID: 30319829 DOI: 10.1155/2018/4606259
    Preputial calculus is a relative surgical rarity. It usually happens in elderly men with poor hygiene and uncircumcised penis complicated with phimosis. In the paediatric group, it is usually secondary to phimosis and other urologic and/or neurologic anomalies. Surgical treatment is the mainstay of treatment. Herein, we report a 27-year-old gentleman with preputial stone presented with obstructive uropathy and was successfully treated with surgical intervention. To the best of our knowledge, this is the first reported case of the largest preputial stone in Malaysia.
    Matched MeSH terms: Calculi
  17. Staples CA, Brown MJ, Bai TR, Chan NH
    Can Assoc Radiol J, 1996 Apr;47(2):136-9.
    PMID: 8612087
    Matched MeSH terms: Calculi/ethnology; Calculi/pathology
  18. Sarmani S, Kuan LL, Bakar MA
    Biol Trace Elem Res, 1990 7 1;26-27:497-502.
    PMID: 1704755
    Kidney stone samples of the types calcium oxalate, uric acid, and xanthine were analyzed for their elemental contents by neutron activation analysis to study both the elemental correlation and influence of element on stone precipitation processes. Elements, such as Al, Au, Br, Ca, Cl, Co, Cr, Fe, Hg, I, K, Mg, Na, Sb, Se, Sr, and Zn, were determined quantitatively. Calcium oxalate stones contained higher concentration of all the elements analyzed compared to uric acid or xanthine stones. The concentrations of Cl, Fe, K, Na, Sr, and Zn were relatively higher than Au, Co, Cr, and Sb. A positive correlation exists between Ca and Zn, whereas a negative correlation exists between Sr and Ca. Zinc may play an important role in the formation of calcium oxalate stone.
    Matched MeSH terms: Kidney Calculi/chemistry*
  19. Goh LC, Chitra BK, Shaariyah MM, Ng WS
    BMJ Case Rep, 2016 Oct 28;2016.
    PMID: 27793872 DOI: 10.1136/bcr-2016-217514
    Sialolithiasis is among the most common disease affecting the major salivary glands whereby the submandibular gland or its duct is affected in the majority of cases. We report a case of the surgical removal of a giant sialolith along with the submandibular gland using the transcervical approach and its clinical outcome.
    Matched MeSH terms: Salivary Gland Calculi/surgery*
  20. Lee SW, Chaiyakunapruk N, Chong HY, Liong ML
    BJU Int, 2015 Aug;116(2):252-64.
    PMID: 25381743 DOI: 10.1111/bju.12983
    To compare the effectiveness of various treatments used for lower pole renal calculi.
    Matched MeSH terms: Kidney Calculi/surgery*
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