Categories: FOREIGN BODIES IN THE AIR AND FOOD PASSAGES
Sources: A Manual Of Peroral Endoscopy And Laryngeal Surgery
The air and food passages may be invaded by any foreign substance of
solid, liquid or gaseous nature, from the animal, vegetable, or
mineral kingdoms. Its origin may be from within the body (blood, pus,
secretion, broncholiths, sequestra, worms); introduced from without by
way of the natural passages (aspirated or swallowed objects); or it
may enter by penetration (bullet, dart, drainage tube from the neck).