off. Neoplasms ol.' the Larynx. 



imiiiction with i-'ray oiiitiiieiit. Xaiii sncoceded in one case,in> 

 caiisini*- tlie (li8ai)pc'araijce of edema of the glottis by re])eatedly 

 IHiIling out the tongue of the patient. 

 '1 o .Tkei 'prim'aly i disi^ase knuSt j > lo-f j cbuT&e, be i prapecLy- tr^eated. 



■/r<«Jl\"l' '!" >Mril(il;;7^ Mih ;7l!'|(f(n •/•l''V 't-iJii'I ,-,-;/•(•.? r-.ljidi'" u 



?^aln, Kec, 1908,369 (i:?evue).—\VeIsz, AI'L., 1-909, '489. '7,W> '^ ' '.T/" ''^j .<> 



^>:(;'');'. ; ■. .• . , w-i .; .,il ! .H^^I-'-iiM r-\< i; 



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''^*'^4."' Neoplasms of the Larynx. Tumores LaryngisJ'' ■ 



iioi iOccurrence. Tmnoit^rof ,tlie ^istrfnx (are*lc6m|])airoti<V'ely mr^i 

 a^ioni!;- domestic animals; they are encountered most conmiOHly. 

 in the larynx of horses and cattle. Cysts develop occasionally, 

 ill horses, rarely in cattle^ on the anterior surface of the' 

 epiglottis, exceptionally under the cricoid cartilage; they some- 

 times attain the size of a hen's egg and are composed of a 

 wall of several layers surrounding a mucoid mass. Fibromata, 

 lipomata, carcinomata, nielanomata, lymphosarcomata, are :ex- 

 ceedingly rare. Van den Eeckhout observed stenosis of the 

 larynx in a horse due to an enchondrosis of the arytenoidi 

 cartilages. The round, pyriform or nodular hypertrophies of 

 the mucosa (hyperplasia polyposa mucosae laryngis), occasion- 

 ally seen in the course of chronic laryngitis, are also to V.erjnen- 

 t'ieiied here. •;. 



•i- Clinically similar to true neoplasms are tuberculous swell-. 

 ings seen not infrequently in cattle and exceptionally in dogs 

 (Cadiot). These tuberculous masses may reach the size of 

 a hen's egg; they are sometimes pediculated, generally situated 

 behind the lower segment of the vocal cords; and when the. 

 process extends they may spread to the outside of the larynx,; 

 Ajctinomycomata develop generally between the base of the, 

 epiglottis.. ajid,wtlie, .rima .gi^ti,c^s,.,9,^4, ^lie^y; , ,^p4^^i,pj^^er)<>t% 

 siiarfBcei. -»i[t yd iqooz^ aiitofg oil.t 'io Bmob^) mo-il b9£l8if/)2nr;tafb od 



Symptoms. Neoplasms arising from the epiglottis cause 

 difficulties in respiration and deglutition; tumors developing 

 in other parts of the larynx give rise to stenosis sounds and 

 to difficulties in , respiration. In either case occasional or 

 periodic attacks of cough occur. Tumors of the e])iglottis in- 

 terfere with respiration, particularly during drinking, while 

 other tumors of the larynx, unless pediculated, produce a, 

 gradually increasing dyspnea, which comes on during exercise 

 only in the i early stages. Pediculated tumors, on the contrary, 

 produce attacks of dyspnea, since they are. aspirated from 

 time to time into the cleft between the vocal cords. According 

 to the seat and the mobility of the neoplasm, either inspiration, 

 or .expiration or l)oth may be accompanied by difficulty and 

 by a rattling or a whistling sound. The dyspnea which comes 

 on in attacks, suddenly disappears or diminishes considerably; 

 i." :e.^- when the neoplasm becomes displaced out of the aiT; 



