Empyema Necessitatis Due to Streptococcus pneumoniae: Case Report

Empyema necessitatis is a rare complication of empyema characterized by extension of suppuration from the pleural space through the chest wall. The most common etiologies are tuberculosis and actinomycosis. We describe a 60-year-old woman with Streptococcus pneumoniae empyema necessitatis. Empyema necessitans should be kept in the differential diagnosis of patients with left chest masses or abscesses.