Displaying all 17 publications

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  1. Wong KT, Clarke G, Pathmanathan R, Hamilton PW
    Parasitol Res, 1994;80(2):138-40.
    PMID: 8202453
    Established criteria for morphological typing of sarcocysts was applied to a large series of cases of human skeletal muscle sarcocystosis in Malaysia to determine the type of sarcocyst present. We also wanted to test the general usefulness of this classification and to determine if there are any new cyst types. Three-dimensional (3-D) reconstruction was done to see if the sarcocyst has a distinct 3-D morphology. A total of 66 sarcocysts from 21 cases of human muscle sarcocystosis obtained from a previous prevalence study were examined. Tissue sections (5 microns thick) were stained with haematoxylin and eosin and studied under the light microscope. For 3-D reconstruction, an image analyser was used to align and reconstruct the sarcocyst after microscopic images had been captured with a charge-coupled device (CCD) camera. All the cysts best fit into the type 4 category. This classification is generally useful, although cyst wall characteristics and zoite size appear to be the most reliable criteria for classification. The cyst width averaged 77 microns (range, 30-137.5 microns). Cyst walls were smooth, had no cytophaneres and were less than 1 micron thick. No secondary cyst wall or surrounding inflammation was evident. Numerous cyst merozoites with diameters averaging 1 micron filled the cyst lumen. Although septa were not apparent, in many cysts, zoites were arranged in a unique, curvilinear fashion that suggested their presence. 3-D reconstruction showed the sarcocyst to be a long, tortuous "cylinder" with no branching or other distinguishing feature.
    Matched MeSH terms: Muscles/pathology
  2. Dharap AS
    Surg Radiol Anat, 1994;16(1):97-9.
    PMID: 8047976
    During dissection an anomalous muscle was found on the medial aspect in the distal half of one left upper extremity. This muscle arose from the humerus between the m. coracobrachialis and the m. brachialis, passed obliquely across the front of the brachial artery and median nerve and blended with the common origin of the forearm flexor muscles. It does not appear to be an additional head of the biceps brachii or the brachialis muscles. The existence of this anomalous muscle should be kept in mind in a patient presenting with a high median nerve palsy together with symptoms of brachial artery compression.
    Matched MeSH terms: Muscles/pathology
  3. Boon LC, Phaik KS, Khanijow V
    Ann Dent, 1991;50(2):28-32.
    PMID: 1785911
    Desmoid tumor of the mandible, or desmoplastic fibroma, is a rare disease with only a few cases reported in the literature. This paper presents the rare case of an elderly male with desmoplastic fibroma of the mandible with an uncommon accompanying proliferative myositis. The case is discussed with emphasis on the clinical presentation, differential diagnosis and treatment of this lesion.
    Matched MeSH terms: Facial Muscles/pathology*
  4. Myint K, Nwe HH, Kanagasuntheram R
    Med J Malaysia, 1982 Jun;37(2):175-9.
    PMID: 7132838
    Morphological and neuroelectrical changes of the skeletal muscle fibres after various types of injury to the nerve was studied in monkey. The percentage of normal and atrophic muscle fibres after various types of injury to the nerve was compared with the proportion of innervated and denervated muscle as shown by the position of the bend (kink) on the I.D. at corresponding stages. It was found that the pattern and the position of the I.D. curve when considered together only gave an approximate estimation of the proportion of all innervated and denervated muscle fibres as well as the condition ofthe muscle after denervation.
    Matched MeSH terms: Muscles/pathology*
  5. Prathap K, Dissanaike AS
    PMID: 107599
    Matched MeSH terms: Neck Muscles/pathology
  6. Murty OP
    Am J Forensic Med Pathol, 2009 Jun;30(2):201-3.
    PMID: 19465820 DOI: 10.1097/PAF.0b013e31819d9af5
    Primary cystic tumors of papillary muscles of the heart are extremely rare. Here, one case of unusual cystic tumor in papillary muscle of the heart in a 37-year-old Myanmar migrant worker has been reported. He came to Malaysia 2 weeks before and one morning was found dead in sleep. Autopsy revealed cystic lesion in the papillary muscle of the mitral valve of heart, which was prolapsing into ventricular cavity. The cyst had white-jelly like sticky mucus material. The cyst was present in papillary muscle with slight invasion in septum area; it was lined by cuboidal-columnar epithelium and contained mucinous contents. There was no evidence of an inflammatory reaction in the cyst and in cardiac muscles. In addition to cystic neoplasm, the deceased also had histoplasmosis of the lungs. The case is presented with macroscopic and microscopic photographs of the cyst and histoplasmosis of the lungs. This case is reported because of its rarity, unique position, and unusual appearance.
    Matched MeSH terms: Papillary Muscles/pathology*
  7. Goh KJ, Wong KT, Tan CT
    J Clin Neurosci, 2000 Jul;7(4):334-6.
    PMID: 10938615
    We report two patients with myopathic dropped head syndrome, a rare and interesting neuromuscular syndrome characterised by a predominant weakness of the neck extensor muscles. The first patient, a middle aged Chinese man, presented with progressive weakness of neck extension but his clinical course later stabilised despite a lack of response to corticosteroids. Muscle biopsy revealed a necrotising myopathy with no evidence of inflammation. This patient supports the existence of an idiopathic restricted non-inflammatory myopathy, a so called isolated neck extensor myopathy syndrome which is recognised to pursue a less progressive, more benign course. Our second patient had histopathological evidence for polymyositis; there was a favourable response to steroids. Our cases underscore the fact that there may be a spectrum of pathological processes associated with the myopathic dropped head syndrome ranging from non-inflammatory muscle necrosis to a full blown inflammatory myositis.
    Matched MeSH terms: Neck Muscles/pathology*
  8. Fahmy O, Khairul-Asri MG, Schubert T, Renninger M, Malek R, Kübler H, et al.
    Urol Oncol, 2018 02;36(2):43-53.
    PMID: 29102254 DOI: 10.1016/j.urolonc.2017.10.002
    OBJECTIVE: This study aimed to comprehensively analyze the oncological long-term outcomes of trimodal therapy (TMT) and radical cystectomy (RC) for the treatment of muscle-invasive bladder cancer (BC) with or without neoadjuvant chemotherapy (NAC).

    PATIENTS AND METHODS: A systematic search was conducted according to the PRISMA guidelines for studies reporting on outcomes after TMT and RC. A total of 57 studies including 30,293 patients were included. The 10-year overall survival (OS), disease-specific survival (DSS), and recurrence-free survival (RFS) rates for TMT and RC were assessed.

    RESULTS: The mean 10-year OS was 30.9% for TMT and 35.1% for RC (P = 0.32). The mean 10-year DSS was 50.9% for TMT and 57.8% for RC (P = 0.26). NAC was administered before therapy to 453 (13.3%) of 3,402 patients treated with TMT and 812 (3.0%) of 27,867 patients treated with RC (P<0.001). Complete response (CR) was achieved in 1,545 (75.3%) of 2,051 evaluable patients treated with TMT. A 5-year OS, DSS, and RFS after CR were 66.9%, 78.3%, and 52.5%, respectively. Downstaging after transurethral bladder tumor resection or NAC to stage ≤pT1 at RC was reported in 2,416 (29.1%) of 8,311 patients. NAC significantly increased the rate of pT0 from 20.2% to 34.3% (P = 0.007) in cT2 and from 3.8% to 23.9% (P<0.001) in cT3-4. A 5-year OS, DSS, and RFS in downstaged patients (≤pT1) at RC were 75.7%, 88.3%, and 75.8%, respectively.

    CONCLUSION: In this analysis, the survival outcomes of patients after TMT and RC for MIBC were comparable. Patients who experienced downstaging after NAC and RC exhibited improved survival compared to patients treated with RC only. Best survival outcomes after TMT are associated with CR to this approach.

    Matched MeSH terms: Muscles/pathology
  9. Yunrong T, Jin WW, Mahendran HA, Koon YB, Jahit S, Kamaruddin MA, et al.
    Dis Esophagus, 2024 Apr 02;37(4).
    PMID: 38163959 DOI: 10.1093/dote/doad072
    BACKGROUND: Esophagectomy is the standard of care for curative esophageal cancer. However, it is associated with significant morbidity and mortality. Esophageal cancer is known to negatively affect the nutritional status of patients and many manifest cancer sarcopenia. At present, measures of sarcopenia involve complex and often subjective measurements. We assess whether the Psoas Muscle Index (PMI); an inexpensive, simple, validated method used to diagnose sarcopenia, can be used to predict adverse outcomes in patients after curative esophagectomy.

    METHODS: Multi-centre, retrospective cohort between 2010-2020, involving all consecutive patients undergoing curative esophagectomy for esophageal cancer in University Malaya Medical Centre, Sungai Buloh Hospital, and Sultanah Aminah Hospital. The cut-off value differentiating low and normal PMI is defined as 443mm2/m2 in males and 326326 mm2/m2 in females. Complications were recorded using the Clavien-Dindo Scale.

    RESULTS: There was no statistical correlation between PMI and major post-esophagectomy complications (p-value: 0.495). However, complication profile was different, and patients with low PMIs had higher 30-day mortality (21.7%) when compared with patients with normal PMI (8.1%) (p-value: 0.048).

    CONCLUSIONS: Although PMI did not significantly predict post-esophagectomy complications, low PMI correlates with higher 30-day mortality, reflecting a lower tolerance for complications among these patients. PMI is a useful, inexpensive tool to identify sarcopenia and aids the patient selection process. This alerts healthcare professionals to institute intensive physiotherapy and nutritional optimization prior to esophagectomy.

    Matched MeSH terms: Psoas Muscles/pathology
  10. Paramanantham Y, B M Said NA, Mun KS
    Malays J Pathol, 2023 Apr;45(1):19-29.
    PMID: 37119243
    INTRODUCTION: Although epithelial-mesenchymal transition (EMT) and p53 have been established to play a pivotal role in the aggressiveness of muscle-invasive bladder cancer (MIBC), its pathological correlation to cisplatin treatment in the Malaysian patient cohort is lacking. This study aimed to evaluate the association of EMT markers, e-cadherin, vimentin and actin, as well as tumour suppressor gene, p53, in cisplatin-receiving MIBC patients.

    MATERIALS AND METHODS: Formalin-fixed paraffinembedded (FFPE) blocks of muscle-invasive bladder cancer patients receiving cisplatin-based chemotherapy between January 2010 to December 2020 were traced. Immunohistochemistry staining was performed on traced blocks using antibodies to e-cadherin, vimentin and actin, and p53.

    RESULTS: p53 and e-cadherin were stained positive in most cases (p=0.515 and 0.242 respectively), although e-cadherin showed stronger positive expression in pre-cisplatin receiving MIBC cases. All the cases stained negative for actin and vimentin except for faint staining observed in one pre-cisplatin case.

    CONCLUSION: Although this study does not show a significant correlation between EMT markers and p53 with cisplatin-responsiveness in MIBC patients, the results serve as preliminary findings on the heterogeneous outcomes of molecular staining in the Malaysian MIBC patient cohort.

    Matched MeSH terms: Muscles/pathology
  11. Khil EK, Choi JA, Hwang E, Sidek S, Choi I
    BMC Musculoskelet Disord, 2020 Jun 26;21(1):403.
    PMID: 32590960 DOI: 10.1186/s12891-020-03432-w
    BACKGROUND: To evaluate paraspinal back muscles of asymptomatic subjects using qualitative and quantitative analysis on CT and MRI and correlate the results with demographic data.

    METHODS: Twenty-nine asymptomatic subjects were enrolled prospectively (age: mean 34.31, range 23-50; 14 men, 15 women) from August 2016 to April 2017. Qualitative analysis of muscles was done using Goutallier's system on CT and MRI. Quantitative analysis entailed cross sectional area (CSA) on CT and MRI, Hounsfield unit (HU) on CT, fat fraction using two-point Dixon technique on MRI. Three readers independently analyzed the images; intra- and inter-observer agreements were measured. Linear regression and Spearman's analyses were used for correlation with demographic data.

    RESULTS: CSA values were significantly higher in men (p 

    Matched MeSH terms: Paraspinal Muscles/pathology*
  12. Teo BW, Toh QC, Chan XW, Xu H, Li JL, Lee EJ
    Asia Pac J Clin Nutr, 2014;23(4):619-25.
    PMID: 25516320 DOI: 10.6133/apjcn.2014.23.4.01
    Clinical practice guidelines recommend objective nutritional assessments in managing chronic kidney disease (CKD) patients but were developed while referencing to a North-American population. Specific recommendations for assessing muscle mass were suggested (mid-arm circumference, MAC; corrected mid-arm muscle area, cAMA; mid-arm muscle circumference, MAMC). This study aimed to assess correlation and association of these assessments with dietary protein intake in a multi-ethnic Asian population of healthy and CKD patients.
    Matched MeSH terms: Muscles/pathology*
  13. Esposito DH, Stich A, Epelboin L, Malvy D, Han PV, Bottieau E, et al.
    Clin Infect Dis, 2014 Nov 15;59(10):1401-10.
    PMID: 25091309 DOI: 10.1093/cid/ciu622
    BACKGROUND: Through 2 international traveler-focused surveillance networks (GeoSentinel and TropNet), we identified and investigated a large outbreak of acute muscular sarcocystosis (AMS), a rarely reported zoonosis caused by a protozoan parasite of the genus Sarcocystis, associated with travel to Tioman Island, Malaysia, during 2011-2012.

    METHODS: Clinicians reporting patients with suspected AMS to GeoSentinel submitted demographic, clinical, itinerary, and exposure data. We defined a probable case as travel to Tioman Island after 1 March 2011, eosinophilia (>5%), clinical or laboratory-supported myositis, and negative trichinellosis serology. Case confirmation required histologic observation of sarcocysts or isolation of Sarcocystis species DNA from muscle biopsy.

    RESULTS: Sixty-eight patients met the case definition (62 probable and 6 confirmed). All but 2 resided in Europe; all were tourists and traveled mostly during the summer months. The most frequent symptoms reported were myalgia (100%), fatigue (91%), fever (82%), headache (59%), and arthralgia (29%); onset clustered during 2 distinct periods: "early" during the second and "late" during the sixth week after departure from the island. Blood eosinophilia and elevated serum creatinine phosphokinase (CPK) levels were observed beginning during the fifth week after departure. Sarcocystis nesbitti DNA was recovered from 1 muscle biopsy.

    CONCLUSIONS: Clinicians evaluating travelers returning ill from Malaysia with myalgia, with or without fever, should consider AMS, noting the apparent biphasic aspect of the disease, the later onset of elevated CPK and eosinophilia, and the possibility for relapses. The exact source of infection among travelers to Tioman Island remains unclear but needs to be determined to prevent future illnesses.

    Matched MeSH terms: Muscles/pathology
  14. Intapan PM, Chotmongkol V, Tantrawatpan C, Sanpool O, Morakote N, Maleewong W
    Am J Trop Med Hyg, 2011 Jun;84(6):994-7.
    PMID: 21633039 DOI: 10.4269/ajtmh.2011.10-0675
    Previously, we reported the presence of imported trichinellosis in a Thai worker returning from Malaysia, who presented with progressive generalized muscle hypertrophy and weakness after eating wild boar meat. This work analyzed a partial small subunit of a mitochondrial ribosomal RNA gene of Trichinella larvae isolated from the patient. The results showed complete identity with a mitochondrial RNA gene of Trichinella papuae (GenBank accession no. EF517130). This is the first report of imported trichinellosis in Thailand caused by T. papuae. It is possible that T. papuae is widely distributed in the wildlife of Southeast Asia.
    Matched MeSH terms: Muscles/pathology
  15. Haron H, Yusof MR, Maskon O, Ooi J, Rahman MR
    Heart Surg Forum, 2012 Feb;15(1):E59-60.
    PMID: 22360910 DOI: 10.1532/HSF98.20111000
    Papillary fibroelastoma is a rare primary tumor of the heart valves. This lesion can occur on any of the valves or endothelial surface of the heart and has been detected by echocardiography, by cardiac catheterization, during open heart operations for other conditions, and at autopsy. Because of the potential for comorbidities, this tumor should be removed. We present the case of an elderly man with a diagnosis of severe mitral valve regurgitation and moderate tricuspid valve regurgitation who was suspected to have a tricuspid valve vegetation. Mitral valve replacement, tricuspid valve repair, and excision of the lesion were performed successfully. A histologic examination of the vegetation confirmed it to be a papillary fibroelastoma. We present this case to emphasize the rarity of this tumor and the importance of a correct diagnosis to avoid delaying its prompt and definitive management.
    Matched MeSH terms: Papillary Muscles/pathology
  16. Camprubí D, Rodriguez-Valero N, Losada I, Grau-Junyent JM, Muñoz J
    Travel Med Infect Dis, 2018 05 23;24:16.
    PMID: 29802894 DOI: 10.1016/j.tmaid.2018.05.009
    Matched MeSH terms: Muscles/pathology
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