Background: Purulent pleurisy has become rare. It is often masked by previous antibiotic treatment so that functional prognosis may be poor.
Patients and methods: Twenty children with purulent pleurisy of the large cavity admitted from 1987 to 1993 were included in the study: there were nine infants (age 5 to 18 months) with pleuro-pulmonary staphylococcal infection (group I) and 11 children (4-13 years) (group II). Clinical, biological, bacteriological and radiologic findings were analysed retrospectively as was the outcome.
Results: Patients of group I were admitted in poor general condition. X-ray showed moderate effusion and characteristic signs of staphylococcal infection. The bacteria identified in seven patients (77%) was S aureus. Recovery was rapid with antibiotics and simple local treatment. X-rays were normal two months after hospital discharge in seven patients (77%). One infant presented cicatricial bullous emphysema which required segmental resection. Patients of group II were admitted for moderate respiratory signs after a relatively long delay (14 days) since the onset of symptoms. X-rays showed considerable effusion in all and mediastinal shift in five patients (45%). Streptococcus pneumoniae was identified in one patient only. Local treatment of empyema was difficult; the effusion, already fibrinous, required repeated use of chest tubes in eight cases and surgical decortication in three. X-rays, performed 2 months after hospital discharge, were normal in only three patients. Long-term course was nevertheless favorable since chest X-rays at 5 months were normal in all children of both groups.
Conclusions: Early recognition of purulent pleurisy is important in children aged over 3 years to ensure effective drainage before the effusion becomes fibrinous. All patients in whom the first tube was inserted after more than 10 days had a difficult follow-up requiring repeated chest drainages or surgery. Ultrasonography was a useful aid for diagnosis and local treatment. Computed tomography was useful for adapting treatment after several days of course.