Paraquat is a potent herbicide of lethal toxicity. Its injury mechanism is
attributed to the generation of very-reactive oxygen species, such as super
oxide radicals, through which multiple injuries are produced on mucosa, alt
hough there have been no reports of injuries on the trachea, We describe a
case of fatal paraquat poisoning with tracheal injuries, where the clinical
debut was acute respiratory insufficiency and a spontaneous pneumothorax.