ArticleEuropean journal of case reports in internal medicine2022
Misdiagnosis Due to False-Positive Detection of Pneumococcal Urinary Antigen.
Article in European journal of case reports in internal medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors at 2 institutions in 1 country.
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Abstract
Introduction: The detection of pneumococcal antigens in urine is an alternative to gram staining, and their culture is central to the diagnosis of pneumococcal pneumonia. We present a case of the false-positive detection of urinary Case description: A 70-year-old woman presented to the emergency department with a 1-day history of chills and difficulty walking. She had a fever and her physical examination was normal. Non-contrast chest computed tomography (CT) revealed a slight ground-glass opacity in the left lower lobe. Laboratory tests revealed liver injury and elevated C-reactive protein levels. A urinary pneumococcal antigen test was positive, and she was diagnosed with acute bronchopneumonia caused by Discussion: False-positive results might be explained by the presence of C-polysaccharide antigens in the cell wall of Conclusion: The overuse of the pneumococcal urinary antigen tests can lead to false positives and misdiagnosis. LEARNING POINTS: False-positive pneumococcal urinary antigen results may lead to the misdiagnosis of pneumococcal pneumonia caused by
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