. The diseases of infancy and childhood : designed for the use of students and practitioners of medicine. turn perpetuates thecrowing noise. Others have attributed this condition to the presenceof an enlarged thymus (Variot). Some of these infants are distinctlylymphatic, and Hochsinger has with .r-rays demonstrated an enlargedthjTuus in many of the cases of laryngeal stridor coming under hisnotice. He belie\es the condition due to an enlarged thymus, andsuggests that the term asthma thymicum be applied to thesecases. Lee and Refslund have published 2 cases with autopsy inwhich laryngeal strid
. The diseases of infancy and childhood : designed for the use of students and practitioners of medicine. turn perpetuates thecrowing noise. Others have attributed this condition to the presenceof an enlarged thymus (Variot). Some of these infants are distinctlylymphatic, and Hochsinger has with .r-rays demonstrated an enlargedthjTuus in many of the cases of laryngeal stridor coming under hisnotice. He belie\es the condition due to an enlarged thymus, andsuggests that the term asthma thymicum be applied to thesecases. Lee and Refslund have published 2 cases with autopsy inwhich laryngeal stridor existed from birth and in which there was ananatomical malformation of the epiglottis. This consisted in a fold-ing of the epiglottis laterally, so that the aryepiglottic folds werealmost in contact. The superior opening of the larynx was thuscovered by the deformed epiglottis in such a way that respirationtook place through a mere slit of the epiglottis, hence the gruntingor sawing noise. I have published a case of laryngeal stridordying of intercurrent pneumonia (Fig. 217). This case showed the. Fig. 217.—Larynx from au-thors case of liirj-ngeal . thirteen months of age. 804 DISEASES OF THE NERVOUS SYSTEM same malformation of the epiglottis described by Lee and Refslund,and would support the theory of anatomical deformity as a causatvefactor in these cases. Toward the second year of life the conditiondisappears spontaneously. LARYNGISMUS STRIDULUS. ( of the Glottis.) Laryngismus stridulus is a spasmodic functional nervous disorderof the glottis, involving the muscles of inspiration and expiration. Occurrence.—The affection is more frequent in boys than in is most common in the first year of life. The majority of thecases occur before the end of the second year. Kassowitz found348 of 370 cases to occur before that time. It may occur in thenewly born infant (Henoch, Kassowitz). Most of the infants andchildren affected by this disorder are su
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