The comparison of chest radiographic manifested and laboratory tests in children of different age with Mycoplasma pneumonia pneumonia

Objective To explore the difference of complete blood count,C-reactive protein(CRP)and humeral immunity in children of different ages with Mycoplasma pneumonia pneumonia(MPP)manifested as lobar pneumonia and bronchopneumonia.Methods Two hundred and eleven children with MPP were enrolled and divided by ages,one month to six years and older than six years,and by chest radiographic manifested,lobar pneumonia group and bronchopneumonia group.Complete blood count,CRP and humeral immunity were detected at admission.Results The rate of lobar pneumonia in older than six years group is 45.92%,which was significantly higher than one month to six years group(χ2 = 13.4,P 0.001).In one month to 6 years group,the lymphocyte count was significantly lower in lobar pneumonia group than in bronchial pneumonia group(P 0.05).In older than six years group,the levels of IgA and IgM were significantly lower in lobar pneumonia than in bronchial pneumonia group(P 0.05).In two age groups,the level serum CRP was significantly higher in lobar pneumonia group than in bronchial pneumonia group(P 0.05).Conclusions Lobar pneumonia is more common in older children with MPP.It may be one of manifestations of intensive systemic inflammatory response to Mycoplasma pneumonia infection.Lymphopenia and early specific antibody insufficiency at early stage may also be related to the occurrence of lobar pneumonia.