Inhalational anthrax with acute respiratory distress syndrome.

A 10-year-old boy presented with facial swelling, thick exudates in the nasal cavities with membranes covering the nasopharynx, shock and respiratory distress. X-ray of the paranasal sinuses showed opacification of both maxillary sinuses. Nasal diphtheria was suspected but culture of the membranes grew Bacillus anthracis. Chest X-ray showed mediastinal widening and extensive pulmonary infiltrates compatible with respiratory anthrax.