[Peripharyngeal abscess. Apropos of 2 cases].

Peripharyngeal abscess still occurs despite the advent of antibiotics. Mediastinitis developing from a retropharyngeal abscess is a rare complication. A patient with retropharyngeal and subsequent mediastinal abscess is reported. We explain how pathological processes in the neck, can spread into the chest by direct continuity or by dissection through the fascial planes. We also report another patient lateropharyngeal abscess and respiratory distress.