Presentation
Cough, sputum for 15 days, fever for 3 days.
Patient Data
Mass-like consolidation in the medial basal segment of the right lower lobe with retained secretions and bronchial luminal narrowing.
Minor adjacent ground glass opacity.
Lungs are otherwise normal.
After intravenous infusion of 0.5g levofloxacin daily for one week, the consolidation was almost completely resolved.
Case Discussion
The patient was positive for Mycoplasma pneumoniae IgM and there were no abnormalities in lung tumor markers. On bronchoscopy, the lumen of the medial, anterior, lateral and posterior basal segments of the right lower lobe were slightly narrowed with inflammatory changes. Targeted next-generation sequencing of bronchoalveolar lavage fluid identified Mycoplasma pneumoniae.
Mycoplasma pneumoniae almost always causes bronchopneumonia with patchy bronchial wall thickening and airway-centric GGO or consolidation. Rarely focal mass-like consolidation may be caused by secretions obstructing airways.
Active infection is confirmed by rising antibody titers.
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