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KMID : 0383820130750030125
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Tuberculosis and Respiratory Diseases
2013 Volume.75 No. 3 p.125 ~ p.127
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Extremely Increased Serum Carbohydrate Antigen 19-9 Levels Caused by New or Resistant Infections to Previous Antibiotics in Chronic Lung Diseases
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Shin Ji-Young
Yoo Su-Jin
Park Bo-Mi
Jung Sung-Su
Kim Ju-Ock
Lee Jeong-Eun
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Abstract
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In this paper, we describe 72-year-old female patient without evidence of malignant disease presented with significantly elevated serum carbohydrate antigen (CA) 19-9 levels by respiratory infections. She was diagnosed with respiratory infections due to Mycobacterium avium complex and Pseudomonas aeruginosa. The serum CA 19-9 levels remarkably increased (1,453?5,300 U/mL; reference range, <37 U/mL) by respiratory infection and abruptly decreased (357?534 U/mL) whenever infection was controlled by specific treatments. This case suggests that serum CA 19-9 levels may be used as a diagnostic marker to indicate new or resistant infections to previous antibiotics in chronic lung diseases without significant changes in chest X-ray findings.
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KEYWORD
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CA19-9 Antigen, Infection, Lung Neoplasms
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