TUMOURS OF THE LARYNX. 335 



Many animals, however, remain thin and recover slowly ; these 

 are principally cases which have suffered from pseudo-membranous 

 bronchitis. 



Lesions. The lesions may be confined to the larynx, but may also 

 invade neighbouring cavities. They consist in the formation of muco- 

 albuminous and fibrinous exudates, covering the mucous membrane in 

 superposed layers, penetrating the epithelial stratum, and adhering so 

 strongly to the corium that attempts to loosen them cause the deeper 

 seated structures to bleed. 



Diagnosis. The symptoms are sufficiently well marked to prevent 

 any confusion arising except with gangrenous coryza, but in this case 

 there is no ophthalmia lesion of the nasal cavities, cutaneous eruption, 

 or eruption over the claws. 



The prognosis is grave when the disease attacks debilitated or 

 exhausted animals. 



The treatment is confined entirely to treating symptoms. As in all 

 acute inflammatory affections, moderate bleeding, sinapisms over the 

 region of the larynx, repeated as often as necessary, or applications of 

 antimonial ointment have been recommended. Applications of moxas 

 or setons in the neighbourhood of the dewlap might possibly prove of 

 value. 



Internally tartar emetic, in doses proportioned to the size of the 

 animal (2i to 3 drachms in adults), has been recommended; also iodide 

 of potassium. 



General stimulants, like alcohol, coffee, tea, acetate of ammonia, and 

 suitable hygienic conditions suggest themselves. Tepid drinks can be 

 given freely. Nourishing and easily digested food, and a ration of milk 

 complete the treatment. 



Emollient and antiseptic fumigations are also of value, as in ordinary 

 sore throat or laryngitis, for they favour the separation and discharge 

 of the false membranes. 



TUMOURS OF THE LARYNX. 



Acute forms of pseudo-membranous laryngitis, or even tuberculous 

 laryngitis, are not the only diseases which affect the larynx. It is by no 

 means exceptional to discover intra-laryngeal tumours, mucous polypi, 

 tuberculomes, and growths due to actinomyces, etc. 



The presence of these tumours is indicated by difficulty in respira- 

 tion, fits of coughing, and threatened suffocation, accompanied by dis- 

 charges of varying character. 



When the tumour is largely sessile, the respiration may simply be 



snoring or whistling, without any suggestion of suffocation ; but if, on 



• the other hand, it is pedunculated, displacement of the polypus produced 



