Peroral endoscopy and laryngeal surgery . hagoscopist, and as shown graphicallyin Fig. 42;.. Zenker recognized the effect of pressure in the causationof pulsion diverticulum, but it remained for Killian to demonstrate theanatomically weak point in the support of the wall and the spasmodicresistance ahead (jf the bolus. Congenital tliverticula have been might be supposed th;it an esi)ecially weak wall might exist from birth 0-12 msKASKs or run: epoptiacus. were it not for the fact that the greatest of all predisposing factors seemsto be age. Pressure diverticula are never seen in yo
Peroral endoscopy and laryngeal surgery . hagoscopist, and as shown graphicallyin Fig. 42;.. Zenker recognized the effect of pressure in the causationof pulsion diverticulum, but it remained for Killian to demonstrate theanatomically weak point in the support of the wall and the spasmodicresistance ahead (jf the bolus. Congenital tliverticula have been might be supposed th;it an esi)ecially weak wall might exist from birth 0-12 msKASKs or run: epoptiacus. were it not for the fact that the greatest of all predisposing factors seemsto be age. Pressure diverticula are never seen in young people, veryrarely before middle life. Possibly crude boluses from imperfect masti-cation liy defective teeth may contribute, but considering the rarity ofdiverticula and the general prevalence of imperfect mastication thisalone could not be causative. Sir Felix Semon reports a very interestingcase of diverticulum of the esophagus occurring in conjunction with acono-enitallv deformed larynx. Undoubtedly cicatricial stenosis, in Fig. 422.—Schema illustrative of the etiology of pressure diverticula. O,oblique fibers of the cricopharyngeus attached to the thyroid cartilage, T. Thefundi form fibers, F, encircle the mouth of the esophagus. Between the two setsof fibers is a gap in the support of the esophageal wall, through which the wallherniates owing to the pressure of food propelled by the oblique fibers, O, ad-vance of the bolus being resisted by spasmodic contraction of the orbicularfibers, F. any sort of stenosis below the level of the inferior constrictors, may, inrare instances, contribute to the formation of a diverticulum. Some ofthe authors cases of diverticulum have been somewhat cicatricial at thesub-diverticular orifice. This, of course, in a long-standing case, mighteasily have resulted from erosion and ulceration following the esopha-gitis due to stagnation. Undoubtedly after a diverticulum has developedto a certain degree there exists a vicious circle,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrespira, bookyear1915
