1.Muscle Weakness in Thyroid Disease: When It Is Not Thyrotoxic Myopathy?
Hamizah Hamzah ; Sarojini Devi Simanchalam ; Yap Yon Lek ; Wong Poh Shean ; Nor Afidah Karim ; Nadiah Mohd Noor ; Noor Lita Adam
Journal of the ASEAN Federation of Endocrine Societies 2026;41(S1):107-108
Introduction:
Muscle weakness in thyroid disease is commonly attributed
to thyrotoxic myopathy or hypokalemic periodic paralysis.
Nevertheless, autoimmune conditions such as idiopathic
inflammatory myopathies (IIM) and myasthenia gravis
(MG) should be considered, as they may coexist with
Graves’ disease.
Case:
A 54-year-old female with hypertension and Graves’
disease, treated with carbimazole for 2 years, had her
therapy discontinued after remission. She was restarted
on low-dose carbimazole following symptom recurrence.
Three weeks later, she developed progressive proximal
weakness, dysphagia, hoarseness, anorexia, and weight
loss. On examination, body mass index was 22 kg/m²
with mild proptosis, symmetrical proximal weakness
(MRC 4/5), and erythematous rashes on thighs and shins.
Otorhinolaryngology evaluation confirmed bilateral vocal cord palsy. Investigations revealed markedly elevated
creatine kinase (7,950 U/L), aspartate aminotransferase
(349 U/L), and alanine aminotransferase (179 U/L), with
euthyroid biochemistry (thyroid-stimulating hormone
5.21 mIU/L, free thyroxine 4 16.6 pmol/L). Hypokalemia
correction failed to improve symptoms, excluding periodic
paralysis. ANA, C3, and C4 were normal. Myositis panel
showed strong anti-Cytosolic 5’-nucleotidase 1A positivity
with borderline anti-Ro-52. A diagnosis of IIM with bulbar
involvement was made. She was treated with intravenous
methylprednisolone and intravenous immunoglobulin,
with clinical improvement.
Conclusion
This case highlights the diagnostic challenge of muscle
weakness in thyroid disease. While thyrotoxic myopathy is
often presumed, markedly elevated creatinine kinase, rash,
and bulbar involvement should prompt suspicion of IIM.
Early immunosuppressive therapy is essential to achieve
favorable outcomes.
Muscle Weakness
;
Thyroid Diseases
;
Muscular Diseases
2.Diagnostic accuracy of pneumonia in Hospital Tuanku Ja’afar Seremban, a tertiary hospital
Poh Kok Wei ; Cheok Lay Hock ; Liow Jyue Hong ; Mohd Azlan bin Mat Soom ; Azlina binti Samsudin ; Nadiah binti Mohd Noor ; Gun Suk Chyn
The Medical Journal of Malaysia 2020;75(1):7-11
Objectives: The primary objective of this study was to
describe the accuracy of pneumonia diagnosis, both
community-acquired pneumonia (CAP) and hospitalacquired pneumonia (HAP). Secondary objectives were
describing the choice of antibiotics used, pathogens
isolated, and predictive parameters in diagnosing
pneumonia.
Methods: This was a prospective cross-sectional study to
determine the accuracy of the diagnosis of CAP and HAP
admitted to Hospital Tuanku Ja’afar. All patients aged ≥12
years admitted to the general medical ward with the
diagnosis of CAP or HAP were included in the study. Chest
radiograph interpretation was done by certified radiologists.
An accurate diagnosis of pneumonia was defined by clinical
signs and symptoms of pneumonia supported by
radiographical evidence.
Results: A total of 159 patients were enrolled into the study
from January 2018 to February 2018. Of these only 59(37.1%)
cases were accurately diagnosed as pneumonia. Amongst
those with pneumonia diagnosis made by the emergency
department, medical officers and specialists of medical
department; 65.4%, 60% and 47.3% respectively were not
pneumonia. Amoxicillin with clavulanate and azithromycin
were amongst the most common first choice of antibiotic
used (46.5%). In this study, pathogens were isolated either
by blood culture or sputum culture in only 20 (12.6%)
patients. There was no significant predictive parameter
identified in this study, which included white cell counts, Creactive protein (CRP) levels, erythrocyte sedimentation rate
(ESR), and Pao2/FiO2 ratio.
Conclusion: About two-thirds of patients diagnosed with
pneumonia did not have a compatible radiological finding.
Better tools and systems are needed to aid in the diagnosis
of pneumonia


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