摘要
Abstract
Objective To compare the clinical value of chest X-ray and low-dose computed tomography(LDCT)in the diagnosis of pediatric Mycoplasma pneumoniapneumonia(MPP),and to analyze the imaging findings of the two examination methods in pediatric MPP.Methods The clinical data of 100 children with suspected MPP who visited the 910th Hospital of Joint Logistics Support Force of PLA from June 2023 to June 2025 were retrospectively collected.All enrolled children underwent both chest X-ray and LDCT examinations sequentially.Taking the clinical comprehensive diagnosis as the gold standard,the diagnostic results of the two examination methods were tallied,and the sensitivity,specificity,positive predictive value(PPV),negative predictive value(NPV),and accuracy were calculated.Concurrently,the chest X-ray and LDCT imaging findings were compared between the MPP group and the non-MPP group.Results According to the gold standard,68 cases were confirmed positive for MPP and 32 cases were negative.Chest X-ray identified 65 positive cases and 35 negative cases,with 11 missed diagnoses and 8 misdiagnoses.LDCT identified 67 positive cases and 33 negative cases,with 3 missed diagnoses and 2 misdiagnoses.Comparison of diagnostic PPV between LDCT and chest X-ray(97.01%vs.87.69%)showed no statistically significant difference(P>0.05),whereas the diagnostic sensitivity,specificity,accuracy,and NPV of LDCT were 95.59%,93.75%,95.00%and 90.91%,respectively,all significantly higher than 83.82%,75.00%,81.00%and 68.57%of chest X-ray(P<0.05).Regarding imaging findings,the proportions of enhanced and disordered pulmonary markings,patchy infiltrates,enlarged hilar shadows,and blurred margins on chest X-ray were significantly higher in the MPP group compared to the non-MPP group(P<0.05);the proportions of parenchymal opacities,interlobular septal thickening,tree-in-bud sign,bronchial wall thickening,pleural effusion,and ground-glass opacities on LDCT were significantly higher in the MPP group compared to the non-MPP group(P<0.05).Conclusions Chest X-ray,being simple to perform and involving low radiation dose,can serve as a preliminary screening tool for pediatric MPP.LDCT enables clearer visualization of small pulmonary lesions,thereby offering higher diagnostic accuracy.Clinically,the appropriate imaging method should be reasonably selected based on the age,disease severity,and diagnostic and therapeutic needs of children.When necessary,combined application of the two methods can enhance diagnostic efficacy.关键词
小儿肺炎支原体肺炎/低剂量CT/胸部X线/诊断价值/影像学表现Key words
Pediatric Mycoplasma pneumoniae pneumonia/Low-dose computed tomography/Chest X-ray/Diagnostic value/Imag-ing finding分类
医药卫生
