1.Radiologically occult hepatocellular carcinoma in a cirrhotic liver presenting with bilateral adrenal metastases
Pravin Mundada ; Mark L Tan ; Able WE Soh
The Medical Journal of Malaysia 2015;70(4):256-258
Although it is common to have extra-hepatic metastasis of
hepatocellular carcinoma (HCC) at the time of presentation,
it is extremely rare to have extra-hepatic metastatic HCC
without a detectable primary in the liver. We report a unique
case in which a patient presented with bilateral large adrenal
masses which were subsequently proven to be metastases
from HCC. However, there was no tumour seen in the liver on
imaging.
Carcinoma, Hepatocellular
2.Accuracy of fine needle aspiration cytology and frozen section histopathology for lesions of the major salivary glands.
Lincoln G L TAN ; Mark L C KHOO
Annals of the Academy of Medicine, Singapore 2006;35(4):242-248
INTRODUCTIONIdentifying malignancy either preoperatively or intraoperatively can have a significant impact on the management of salivary gland tumours. We review our experience with fine needle aspiration cytology (FNAC) and frozen section (FS) for salivary gland lesions. We analyse the accuracy of both modalities and their influence on management.
MATERIALS AND METHODSRetrospective review of 114 patients who underwent salivary gland surgery, 91 with intraoperative FS and 68 with preoperative FNAC. Both sets of results were compared against each other and the final histopathological diagnosis.
RESULTSThe accuracy of FS was 92.3%, with a sensitivity and specificity of 62.5% and 100%. Histologic concordance was 92.4% for benign lesions, and 100% for malignant tumours. The accuracy of FNAC was 89.7%, with a sensitivity and specificity of 100%. The non-diagnostic rate was 10.3%. Histologic concordance for FNAC was inferior to that for FS, with only 64.2% of benign lesions and 50% of malignant tumours correctly identified. FNAC did not alter the management of benign disease even when a correct diagnosis was obtained.
CONCLUSIONOur results suggest that FNAC and FS are complementary in usefulness for malignant tumours. However, FNAC does not influence the management of benign lesions and routine FNAC for every patient may not be cost-effective.
Biopsy, Fine-Needle ; standards ; Frozen Sections ; Humans ; Intraoperative Care ; Retrospective Studies ; Salivary Gland Neoplasms ; diagnosis ; pathology ; Salivary Glands ; pathology ; Sensitivity and Specificity ; Specimen Handling
3.A comparative study of polymerase chain reaction detection of clonal T-cell receptor gamma chain gene rearrangements using polyacrylamide gel electrophoresis versus fluorescence capillary electrophoresis.
Mark B Y TANG ; Tina K L CHONG ; Eugene S T TAN ; Yong Jiang SUN ; Suat Hoon TAN
Annals of the Academy of Medicine, Singapore 2008;37(1):27-31
INTRODUCTIONPolymerase chain reaction (PCR)-based molecular techniques are useful adjunctive tools in the diagnosis of cutaneous T-cell lymphomas (CTCL). This study compares the sensitivity of PCR analysis of the T-cell receptor-gamma (TCR-gamma) gene rearrangements using conventional polyacrylamide gel electrophoresis (PCR-PAGE) and fluorescent capillary electrophoresis (PCR-FCE).
MATERIALS AND METHODSA total of 22 paraffin blocks were analysed using PCR-PAGE and PCR-FCE. There were 17 cases of mycosis fungoides (MF), 4 cases of non-MF CTCL and 1 case of lymphoblastic leukaemia.
RESULTSComplete agreement was obtained between PCR-PAGE and PCR-FCE in 19 of the 22 cases, giving a concordance rate of 86.4%. PCR-FCE had a higher sensitivity of 77.3%, compared to 63.6% for PCR-PAGE, allowing the detection of 3 additional cases of clonal T-cell rearrangements, which had equivocal or polyclonal bands on PAGE. Two of these 3 cases were in erythrodermic MF patients. PCR-FCE also allowed the detection of matching clones in serial specimens taken from different sites and at different time intervals in patients with MF. However, matching clones from different specimens can be achieved qualitatively in PCR-PAGE by running and comparing these on the same polyacrylamide gel block.
CONCLUSIONSBoth PCR-PAGE and PCR-FCE are useful in detecting T-cell clones in CTCL, with both methods being comparable in sensitivity and showing a high concordance rate of 86.4%. PCR-FCE has the added advantage of exhibiting semiquantitative properties, which may be important in early or erythrodermic MF cases, but the requirement for sophisticated and costly machinery limits its availability to high-capacity laboratories. The well-established PCR-PAGE method is a suitable alternative in routine clinical applications.
Base Sequence ; Electrophoresis, Agar Gel ; Electrophoresis, Capillary ; methods ; Electrophoresis, Polyacrylamide Gel ; Fluorescence ; Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor ; Humans ; Lymphoma, T-Cell ; diagnosis ; Mycosis Fungoides ; Polymerase Chain Reaction ; methods ; Sensitivity and Specificity
4.An 11-year review of dermatomyositis in Asian patients.
Wen Chun LIU ; Madeline HO ; Woon-Puay KOH ; Audrey W H TAN ; Patricia P L NG ; Sze Hon CHUA ; Suat Hoon TAN ; Mark B Y TANG
Annals of the Academy of Medicine, Singapore 2010;39(11):843-847
INTRODUCTIONDermatomyositis (DM) is a multisystem inflammatory disease with a strong association with malignancy. We aimed to describe a series of Asian patients with DM and identify any significant clinical factors associated with malignancy.
MATERIALS AND METHODSThis was a retrospective review of a multi-racial cohort of 69 Asian patients diagnosed with DM over an 11-year period from 1996 to 2006.
RESULTSMalignancy was detected in 15 out of 68 patients (22%), the most common of which was nasopharyngeal carcinoma (7 cases). Compared to the non-malignancy group, the malignancy-associated group was older and had more male patients. There were no statistically significant clinical, serological or laboratory factors associated with a higher risk of malignancy.
CONCLUSIONThis study highlights the importance of ongoing malignancy screening especially for nasopharyngeal carcinoma in Asian patients with DM.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Carcinoma ; Confidence Intervals ; Dermatomyositis ; complications ; epidemiology ; immunology ; pathology ; Female ; Humans ; Logistic Models ; Male ; Middle Aged ; Muscle Weakness ; Nasopharyngeal Neoplasms ; epidemiology ; immunology ; pathology ; Odds Ratio ; Paraneoplastic Syndromes ; complications ; epidemiology ; immunology ; pathology ; Retrospective Studies ; Risk Factors ; Singapore ; epidemiology ; Young Adult
5.Interactive journal club: A learning method to enhance collaboration and participation among medical students.
Robbi Miguel G. Falcon ; Renne Margaret U. Alcazar ; Nhel John L. Capistrano ; Charlene Divine M. Catral ; Mark Joseph R. Remucal ; Ara Karizza G. Buan ; Nica Cabungcag ; Nicole Jazzmine L. Escober ; Ryan Nikkole B. Pineda ; Anlene Jane B. Rocha ; Nico Alexander L. Reyes ; Iris Thiele C. Isip-Tan
Acta Medica Philippina 2024;58(14):27-33
OBJECTIVES
This quality improvement study aimed to explore the viability of a learning pedagogy for medical students, the interactive journal club (IJC), in stimulating active learning and engagement among learners. The study intends to explore the benefits provided by the IJC when compared to traditional learning methods (e.g., traditional journal clubs). It attempts to highlight the importance of didactics which focus on active learning and interactive engagement between learners.
The IJC was implemented as a course requirement in HI 201: Health Informatics, a midyear elective course at the College of Medicine, University of the Philippines Manila. A class of MD-PhD (Molecular Medicine) students was divided into two separate groups: the designated leaders who presented the article and moderated the discussion, and the audience who did not read the article beforehand yet were involved in its critical analysis. The IJC was conducted twice in two different sections of MD-PhD (Molecular Medicine) students, across two different midyear terms, Midyear Term 2021, and Midyear Term 2022. Reflection papers were collected and the responses through this requirement were collated before the primary takeaways were extrapolated. A survey was also sent out to the students of each class to itemize the consolidated feedback of students on the proposed didactic.
The overall process of IJC was deemed both exciting and stimulating. The learning pedagogy provided an alternative platform for active learning, fostering a student-centered approach that placed a heavy emphasis on critical thinking. One major challenge identified in the implementation of the educational design was the heavy reliance on student participation which was identified to, at times, be a difficult factor to overcome. In order to improve its implementation, expectations may be set at the beginning and assessed at the end of the session. In addition, a pre- and post-questionnaire may be given to assess the perceived usefulness of this new method for qualitative comparison.
Interactive and student-centered modes of learning are empirical for the improvement of literature appraisal, journal presentation, and evidence-based critical thinking among medical students. IJCs may be utilized as an alternative and effective learning strategy in teaching pertinent skills expected of a proper physician. When compared to traditional pedagogies, IJCs provide a platform for deeper learning and enable the achievement of learning outcomes, with learner engagement as the focal point. Future attempts at executing IJCs may consider the implementation of learning outcomes setting, and the use of pre- and post-IJC surveys to assess the effectiveness of the modality.
Education ; Active Learning ; Critical Thinking
6.Effect of a brief training program on the knowledge of Filipino primary care providers in a rural and a remote setting: A before and after study
Julianne Keane M. Pascual ; Arianna Maever Loreche ; Regine Ynez H. De Mesa ; Noleen Marie C. Fabian ; Josephine T. Sanchez ; Janelle Micaela S. Panganiban ; Mia P. Rey ; Carol Stephanie C. Tan-Lim ; Mark Anthony U. Javelosa ; Ramon Pedro P. Paterno ; Ray U. Casile ; Leonila F. Dans ; Antonio L. Dans
Acta Medica Philippina 2024;58(Early Access 2024):1-7
Background and Objective:
Primary care providers are key players in providing quality care to patients and advancing Universal Health Care (UHC). However, effective and quality healthcare delivery may be affected by inadequate knowledge and failure to adhere to evidence-based guidelines among providers. The Philippine Primary Care Studies (PPCS) is a five-year program that pilot tested interventions aimed at strengthening the primary care system in the country. Evidence-based training modules for healthcare providers were administered in Sorsogon and Bataan from the years 2018 to 2021. Module topics were selected based on common health conditions encountered by providers in rural and remote settings. This program aimed to evaluate the effectiveness of training in increasing provider knowledge.
Methods:
A series of training workshops were conducted among 184 remote- and 210 rural-based primary care
providers [nurses, midwives, barangay or village health workers (BHWs)]. They covered four modules: essential intrapartum and newborn care (EINC), integrated management of childhood illness (IMCI), non-communicable diseases (NCD), and geriatrics. A decision support system (UpToDate) was provided as a supplementary resource for all participants. We administered pre-tests and post-tests consisting of multiple-choice questions on common health conditions. Data was analyzed using paired one-tailed t-test, with an alpha of 0.05.
Results:
The knowledge of nurses, midwives, and BHWs improved after the training workshops were conducted. The largest increase from pre-test to post-test scores were observed among the midwives, with a mean difference (MD) of 32.9% (95% CI 23.9 to 41.9) on the EINC module, MD of 25.0% (95% CI 16.6 to 33.4) in the geriatrics module, and MD of 13.5% (95% CI 6.9 to 20.1) in the NCDs module. The nurses had the greatest improvement in the IMCI module (MD 10.8%, 95% CI 2.5 to 19.1). The knowledge of BHWs improved in all participated modules, with greatest improvement in the NCD module (MD 9.0%, 95% CI 5.77 to 12.14).
Conclusions
Primary care workshops, even if conducted as single-sessions and on a short-term basis, are effective in improving short-term knowledge of providers. However, this may not translate to long-term knowledge and application in practice. Furthermore, comparisons across provider categories cannot be made
as participant composition for each training workshop varied. Ultimately, this study shows enhancing provider knowledge and competence in primary care will therefore require regular and diverse learning interventions and access to clinical decision support tools.
Capacity Building
;
Health Workforce
;
Philippines
;
Primary Health Care
7.Extrapulmonary manifestations and complications of severe acute respiratory syndrome coronavirus-2 infection: a systematic review.
Jiacai CHO ; Joanne LEE ; Ching-Hui SIA ; Chieh Sian KOO ; Benjamin Y Q TAN ; Weizhen HONG ; Ellie CHOI ; Xueying GOH ; Louis CHAI ; Nisha Suyien CHANDRAN ; Horng Ruey CHUA ; Bernard P L CHAN ; Mark MUTHIAH ; Ting Ting LOW ; Eng Soo YAP ; Manjari LAHIRI
Singapore medical journal 2023;64(6):349-365
INTRODUCTION:
We aimed to describe the extrapulmonary manifestations of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection, including their frequency, onset with respect to respiratory symptoms, pathogenesis and association with disease severity.
METHODS:
We searched the MEDLINE and Embase databases for SARS-CoV-2-related studies. Meta-analysis, observational studies, case series and case reports published in English or Chinese between 1 January 2020 and 1 May 2020 were included. Reports with only paediatric or obstetric cases were excluded.
RESULTS:
169 articles were included. Early manifestations (preceding respiratory symptoms until Day 6 of onset) included olfactory and gustatory disturbance (self-reported in up to 68% and 85% of cases, respectively), gastrointestinal symptoms (up to 65.9%) and rash (up to 20.4%). From Day 7 onwards, hypercytokinaemia, paralleled multi-organ complications including acute cardiac injury (pooled incidence of 17.7% in 1,412 patients, mostly with severe disease and 17.4% mortality), kidney and liver injury (up to 17% and 33%, respectively) and thrombocytopenia (up to 30%). Hypercoagulability resulted in venous thromboembolic events in up to 31% of all patients. Uncommon disease presentation and complications comprised Guillain-Barré syndrome, rhabdomyolysis, otitis media, meningoencephalitis and spontaneous pneumomediastinum.
CONCLUSION
Although the systemic manifestations of SARS-CoV-2 infection are variegated, they are deeply interwoven by shared mechanisms. Two phases of extrapulmonary disease were identified: (a) an early phase with possible gastrointestinal, ocular and cutaneous involvement; and (b) a late phase characterised by multiorgan dysfunction and clinical deterioration. A clear, multidisciplinary consensus to define and approach thromboinflammation and cytokine release syndrome in SARS-CoV-2 is needed.
Humans
;
Asian People
;
COVID-19/complications*
;
Inflammation/complications*
;
SARS-CoV-2
;
Thrombosis
8.Management of isolated mandibular body fractures in adults
José ; Florencio F. Lapeñ ; a, Jr. ; Joselito F. David ; Ann Nuelli B. Acluba - Pauig ; Jehan Grace B. Maglaya ; Enrico Micael G. Donato ; Francis V. Roasa ; Philip B. Fullante ; Jose Rico A. Antonio ; Ryan Neil C. Adan ; Arsenio L. Pascual III ; Jennifer M. de Silva- Leonardo ; Mark Anthony T. Gomez ; Isaac Cesar S. De Guzman ; Veronica Jane B. Yanga ; Irlan C. Altura ; Dann Joel C. Caro ; Karen Mae A. Ty ; Elmo . R. Lago Jr ; Joy Celyn G. Ignacio ; Antonio Mario L. de Castro ; Policarpio B. Joves Jr. ; Alejandro V. Pineda Jr. ; Edgardo Jose B. Tan ; Tita Y. Cruz ; Eliezer B. Blanes ; Mario E. Esquillo ; Emily Rose M. Dizon ; Joman Q. Laxamana ; Fernando T. Aninang ; Ma. Carmela Cecilia G. Lapeñ ; a
Philippine Journal of Otolaryngology Head and Neck Surgery 2021;36(Supplements):1-43
Objective:
The mandible is the most common fractured craniofacial bone of all craniofacial fractures in the Philippines, with the mandibular body as the most involved segment of all mandibular fractures. To the best of our knowledge, there are no existing guidelines for the diagnosis and management of mandibular body fractures in particular. General guidelines include the American Academy of Otolaryngology – Head and Neck Surgery Foundation (AAOHNSF) Resident Manual of Trauma to the Face, Head, and Neck chapter on Mandibular Trauma, the American Association of Oral and Maxillofacial Surgeons (AAOMS) Clinical Practice Guidelines for Oral and Maxillofacial Surgery section on the Mandibular Angle, Body, and Ramus, and a 2013 Cochrane Systematic Review on interventions for the management of mandibular fractures. On the other hand, a very specific Clinical Practice Guideline on the Management of Unilateral Condylar Fracture of the Mandible was published by the Ministry of Health Malaysia in 2005. Addressing the prevalence of mandibular body fractures, and dearth of specific guidelines for its diagnosis and management, this clinical practice guideline focuses on the management of isolated mandibular body fractures in adults.
Purpose:
This guideline is meant for all clinicians (otolaryngologists – head and neck surgeons, as well as primary care and specialist physicians, nurses and nurse practitioners, midwives and community health workers, dentists, and emergency first-responders) who may provide care to adults aged 18 years and above that may present with an acute history and physical and/or laboratory examination findings that may lead to a diagnosis of isolated mandibular body fracture and its subsequent medical and surgical management, including health promotion and disease prevention. It is applicable in any setting (including urban and rural primary-care, community centers, treatment units, hospital emergency rooms, operating rooms) in which adults with isolated mandibular body fractures would be identified, diagnosed, or managed. Outcomes are functional resolution of isolated mandibular body fractures; achieving premorbid form; avoiding use of context-inappropriate diagnostics and therapeutics; minimizing use of ineffective interventions; avoiding co-morbid infections, conditions, complications and adverse events; minimizing cost; maximizing health-related quality of life of individuals with isolated mandibular body fracture; increasing patient satisfaction; and preventing recurrence in patients and occurrence in others.
Action Statements
The guideline development group made strong recommendationsfor the following key action statements: (6) pain management- clinicians should routinely evaluate pain in patients with isolated mandibular body fractures using a numerical rating scale (NRS) or visual analog scale (VAS); analgesics should be routinely offered to patients with a numerical rating pain scale score or VAS of at least 4/10 (paracetamol and a mild opioid with or without an adjuvant analgesic) until the numerical rating pain scale score or VAS is 3/10 at most; (7) antibiotics- prophylactic antibiotics should be given to adult patients with isolated mandibular body fractures with concomitant mucosal or skin opening with or without direct visualization of bone fragments; penicillin is the drug of choice while clindamycin may be used as an alternative; and (14) prevention- clinicians should advocate for compliance with road traffic safety laws (speed limit, anti-drunk driving, seatbelt and helmet use) for the prevention of motor vehicle, cycling and pedestrian accidents and maxillofacial injuries.The guideline development group made recommendations for the following key action statements: (1) history, clinical presentation, and diagnosis - clinicians should consider a presumptive diagnosis of mandibular fracture in adults presenting with a history of traumatic injury to the jaw plus a positive tongue blade test, and any of the following: malocclusion, trismus, tenderness on jaw closure and broken tooth; (2) panoramic x-ray - clinicians may request for panoramic x-ray as the initial imaging tool in evaluating patients with a presumptive clinical diagnosis; (3) radiographs - where panoramic radiography is not available, clinicians may recommend plain mandibular radiography; (4) computed tomography - if available, non-contrast facial CT Scan may be obtained; (5) immobilization - fractures should be temporarily immobilized/splinted with a figure-of-eight bandage until definitive surgical management can be performed or while initiating transport during emergency situations; (8) anesthesia - nasotracheal intubation is the preferred route of anesthesia; in the presence of contraindications, submental intubation or tracheostomy may be performed; (9) observation - with a soft diet may serve as management for favorable isolated nondisplaced and nonmobile mandibular body fractures with unchanged pre - traumatic occlusion; (10) closed reduction - with immobilization by maxillomandibular fixation for 4-6 weeks may be considered for minimally displaced favorable isolated mandibular body fractures with stable dentition, good nutrition and willingness to comply with post-procedure care that may affect oral hygiene, diet modifications, appearance, oral health and functional concerns (eating, swallowing and speech); (11) open reduction with transosseous wiring - with MMF is an option for isolated displaced unfavorable and unstable mandibular body fracture patients who cannot afford or avail of titanium plates; (12) open reduction with titanium plates - ORIF using titanium plates and screws should be performed in isolated displaced unfavorable and unstable mandibular body fracture; (13) maxillomandibular fixation - intraoperative MMF may not be routinely needed prior to reduction and internal fixation; and (15) promotion - clinicians should play a positive role in the prevention of interpersonal and collective violence as well as the settings in which violence occurs in order to avoid injuries in general and mandibular fractures in particular.
Mandibular Fractures
;
Jaw Fractures
;
Classification
;
History
;
Diagnosis
;
Diagnostic Imaging
;
Therapeutics
;
Diet Therapy
;
Drug Therapy
;
Rehabilitation
;
General Surgery