Retrospective study on staging characteristics of low-dose CT images in pediatric Mycoplasma pneumonia
Objective To retrospectively explore the low-dose CT staging manifestations of 90 cases of pediatric Myco-plasma pneumonia that occurred in 2023.Methods Low dose CT imaging data of 90 cases of pediatric Mycoplasma pneu-monia admitted to No.988 Hospital of the Joint Service logistic Support Force of the People's Liberation Army from August 2023 to November 2023 were collected,and the imaging features were retrospectively analyzed.Results Among the 90 pediatric patients,58 cases were mild,and their lung CT only showed changes in the ultra early,early,and absorption and dissipation stages.Ultra early stage:58 cases(100％)showed single or multiple focal ground glass shadows in the middle lobe of the right lung and lower lobes of both lungs,with lesions mostly located in the peripheral subpleural zone.Another 25 cases(43.1％)had scattered or single focal ground glass opacities in both upper lobes of the lungs.Early stage:58 cases(100％)showed thickening of the interlobular septa in the lung tissue where the lesions were located in the lower lobe of both lungs and the middle lobe of the right lung,with multiple or scattered ground glass density shadows and small consolidation shadows.20 cases(34.4％)had scattered ground glass shadows in the upper lobe of the right lung.21 cases(36.2％)had scattered ground glass shadows in the upper lobe of the left lung.Absorption and dissipation peri-od:Among 58 mild patients,35 cases(60.3％)had complete absorption of lesions,and 23 cases(39.6％)had residual bands,small nodular shadows,and grid shadows in the lungs.32 cases of severe lung CT manifestations:ultra early and early manifestations were the same as mild symptoms,but all 32 cases(100％)had multiple lesions and spread to the me-dial zone of both lungs.Rapid progression period:Multiple lesions in both lungs quickly fused into large high-density shadows.In 32 cases(100％),high-density shadows in the peripheral and intermediate bands of the lower lobes of both lungs were all solid lesions,with 17 cases(53.1％)showing air bronchogram signs.Among the 32 cases,19 cases(59.3％)had high-density shadows in both lungs,with relatively thin density and mild consolidation.Solidification pe-riod:Among 32 cases,20 cases(62.5％)showed a trend of narrowing of the lesion area,with a small amount of ground glass lesion absorption.Absorption and dissipation period:32 cases(100％)had residual lesions in both lungs,mainly manifested as patchy and irregular consolidation lesions,multiple cord shadows,coarse grid shadows,bronchial traction dilation,distortion,and thickening of the tube wall,forming"cuff sign"changes,pleural thickening,and adhesions.Conclusion The low-dose CT staging of pediatric Mycoplasma pneumonia,which occurred in 2023,has certain charac-teristics and is helpful for guiding clinical diagnosis and treatment.
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