[Purulent pleurisy caused by anaerobic bacteria. Apropos of 2 observations].

Purulent pleural effusions due to anaerobic organisms secondary to infections of the pulmonary parenchyma are complications which often occur following the inhalation of organisms from the buccal cavity. The most commonly found organisms belong to the endogenous anaerobic flora of Veillon. Rapid encystment of the pleural collection is suggestive of this diagnosis. Treatment consists of drainage of the cavity associated with specific antibiotics.