Recurrent pneumonia in children — clinical case

Case summary

This toddler presents with recurrent pneumonia confined to the same lobe, which is the pattern that should immediately be treated as a structural lesion rather than bad luck with viruses. The essential clinical insight is that same-site recurrence points to a fixed local problem — a foreign body, a congenital malformation, or localised bronchiectasis — and that in a two-year-old with a peanut-eating coughing fit, an unwitnessed inhaled foreign body is the leading concern until bronchoscopy excludes it. [1] [2]

Initial assessment and investigations

The history and examination are directed at confirming true recurrence and defining the pattern. Reviewing all three previous films confirms that each episode struck the right lower lobe, and the current hyperlucent segment suggests air trapping distal to a partial bronchial obstruction. Because the disease is fixed in one site, the priority is structural imaging and airway inspection rather than a systemic immune screen, although a baseline full blood count and immunoglobulins remain reasonable. [1] [3]

A contrast-enhanced chest CT is obtained to look for a congenital malformation, localised bronchiectasis, or extrinsic compression and to characterise the air trapping. Because most aspirated objects are radiolucent and the choking history is suggestive though unwitnessed, a normal or non-specific film cannot exclude a foreign body, and flexible or rigid bronchoscopy is planned to inspect the airway directly, obtain lavage microbiology, and remove any retained object. [2] [1]

Management

At bronchoscopy a fragment of peanut is found obstructing the right lower lobe bronchus with distal purulent secretions, and it is removed. The retrieved foreign body explains the recurrent same-site pneumonia, the persistent interval cough, and the air trapping. The acute infection is treated to community-acquired pneumonia guidelines, airway clearance is instituted, and radiographic resolution is confirmed on a follow-up film rather than assumed from symptomatic recovery. [2] [3]

Disposition and counselling

The child is followed to confirm that the lung re-expands and that the recurrent pneumonia stops now the obstruction is relieved, with vigilance for established localised bronchiectasis if damage has already occurred. The family is counselled that a long-retained foreign body was the cause, that late diagnosis risks permanent airway damage in the affected segment, and on the importance of avoiding whole nuts and other high-risk foods in young children. Structured respiratory follow-up is arranged because a segment that has been chronically infected may need ongoing surveillance. [2] [3]