ABSTRACT
Lung abscess is a localized area of non tuberculosis suppurative necrosis of the parenchyma of lung, resulting in formation of cavity containing purulent materiel. It is uncommun in child. A 3 years boy was admitted with prolonged fever and dyspnea. Chest X ray showed a thick walled hydric cavitation opacity containing an air-fluid level. Chest ultrasound examination showed collection of 6,8 cm of diameter in the right pulmonary field with an air-fluid level. Hemoculture showed Staphylococcus aureus. Patient presented septic shock and surgical drainage was indicated. Histological examination confirmed diagnosis of lung abscess. Any inderlying condition was noted and diagnosis of primary abscess was made. Patient demonstrated complete recovery. He's asymptoamtic with normal chest X ray and pulmonary function after 3 years of evolution. Lung abscess represent a rare cause of prolonged fever in child. An underlying condition must be excluded to eliminate secondary abscess. Long term follow up of pulmonary function is capital