The Correlation between Chest X-ray Scores and the Clinical Findings in Children and Adults with <i>Mycoplasma pneumoniae</i> Pneumonia

Abstract

Objective To compare the radiological and laboratory data of children and adults with Mycoplasma pneumoniae pneumonia (MPP) and to evaluate the correlation between the total affected lung area and the clinical findings. Methods We retrospectively examined the data from MPP patients who visited our hospital during the period from April 2006 to July 2014. All data were retrieved at the time of the diagnosis of MPP and were analyzed to investigate the correlation between the clinical findings and the total affected lung area using a chest X-ray scoring system. Results We identified 71 children and 54 adults with MPP. The incidence of consolidation, which was the most common chest X-ray finding in both groups, was similar (children: n = 62, 87.3%; adults: n = 45, 83.3%). In contrast, air bronchogram, bronchial thickening, and atelectasis were observed significantly more frequently among children than among adults. In both groups, a chest X-ray scoring system revealed a zonal predominance of the affected area (middle-to-lower lung fields). The body temperature and serum data such as the C-reactive protein level, white blood cell count, and lactate dehydrogenase level were significantly higher in the child group than in the adult group. The total score did not significantly correlate with the above-mentioned inflammatory markers or the presence of hypoxemia in either group. Conclusion This study showed the first evidence of a correlation between the extent of lung abnormalities on chest X-ray (calculated as a total score) and the clinical findings, including the presence of hypoxemia, in children and adults with MPP.

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