448 FOREIGN BODIES IN THE TRACHEA. 



Hink sarcomata. Siedamgrotzky describes a colloid cyst in a horse's 

 trachea, It was found embedded in loose connective tissue just 

 below the cricoid cartilage. Benjamin discovered in the anterior 

 wall of the trachea a tumour, which had formed after an attack 

 of sore throat, and produced difficulty in breathing. Besides the 

 varieties of strongyhis, usually occurring in numbers in the bronchi 

 of ruminants and swine, acari have been seen in the trachea. 

 Paulicki found them in a long-tailed monkey. 



The symptoms are very varied. Dust or fluids obtaining entrance 

 into the bronchi cause irritation and sometimes pneumonia. Food 

 particles in quantity drawn into the bronchi may produce death 

 from suffocation. A cow described by Griill, which, till the moment 

 of seizure had been perfectly healthy, suddenly died in the stall 

 with symptoms of suffocation, and post-mortem showed the bronchi 

 to be filled with food. Similar cases have repeatedly been observed. 

 But Leisering has drawn attention to the fact that, in animals with 

 incomplete closure of the cardia, and especially in ruminants, portions 

 of the food after death may be forced up the oesophagus into the 

 pharynx, thence into the trachea and bronchi. This is most likely 

 to occur where the stomach has been full, or its contents in a state 

 of fermentation, or the carcase has been moved. A case described 

 by Werner was clearly produced in this way. 



Dyspnoea and coughing result immediately the foreign body 

 reaches the bronchi. The movement of the foreign body can some- 

 times be heard or felt from without. The narrowness of the rima- 

 glottidis renders it difficult for solids that have entered thus far to 

 make their exit, though they are often expelled by coughing. In 

 Henderson's case, as reported, the tube of a tracheal cannula, which 

 had slipped into the windpipe, was said to have been ejected through 

 the mouth ; but such a result is very exceptional. Tumours in the 

 trachea only attract attention when they become large enough to 

 obstruct the air passage and produce dyspnoea. A loud sound is 

 then heard, both during inspiration and expiration. It is particularly 

 characteristic of tracheal tumours that they cause a marked sound 

 during expiration. The presence of a tumour can only be directly 

 detected when it originates on the outer surface of the trachea, and 

 thence breaks through the tracheal wall, as malignant new growths 

 generally do. Otherwise the position of a tumour may be determined 

 by palpation, pressure at a particular spot increasing or decreasing 

 the dyspnoea and noise. This symptom is quite peculiar to tumours. 



Treatment. Prophylactic treatment requires that in giving 

 fluids to dogs and horses particular care should be taken, especially 



