. The elements of pathological histology with special reference to practical methods . e changedinto a mass in which no nuclei can be seen, and which is sometimesdistinctly reticulated (coagulation necrosis) and encloses in its sub- 270 THE LARYNX AND TRACHEA stance clusters of cocci (usually Staphylococcus pyogenes, aureus), whilstthe underlying portion of mucous membrane is in a state of small-celled infiltration (Fig. 133). Whether true typhoid ulcers {,ulcers caused by typhoid bacilli) also occur is somewhat doubtful. Regarding the efflorescences which sometimes form also in thelarynx
. The elements of pathological histology with special reference to practical methods . e changedinto a mass in which no nuclei can be seen, and which is sometimesdistinctly reticulated (coagulation necrosis) and encloses in its sub- 270 THE LARYNX AND TRACHEA stance clusters of cocci (usually Staphylococcus pyogenes, aureus), whilstthe underlying portion of mucous membrane is in a state of small-celled infiltration (Fig. 133). Whether true typhoid ulcers {,ulcers caused by typhoid bacilli) also occur is somewhat doubtful. Regarding the efflorescences which sometimes form also in thelarynx in variola, see p. 224. 4. Infective Granulomata and New-formations.—Tuberculosis of thelarynx and trachea, which usually occurs in the course of pulmonarytuberculosis in consequence of penetration of tubercle bacilli intothe mucous membrane from the sputum, is localised most frequentlyon the processus vocales and vocal chords in the larynx, and in thetrachea on the posterior wall in the neighbourhood of the ducts ofmucous glands. There first form beneath the epithelium either /?. • l^ /?; -WMiS^^cW^^ri^^^ 4 %^-^0^^^^i^^^:^i ,/ tiijMftVC a Fio. 134.—Ulcekating Gumma of the Tracheal Mucous Membrane. x 77.(Haematoxylin and eosin.) A, Mucous membrane of the trachea covered with cylin-drical epithelium and infiltrated with small cells; B, Ulcerated gumma; a. Giantcell; b. Caseous and necrotic masses of the gumma. small-celled foci and giant-celled tubercles, or else more diffusecellular infiltrations (granulation tissue), whicli caseate and it is not uncommon also to meet with round- or epithelioid-celled tubercles lying scattered in the submucosa or in still deeperstrata. Leprosy causes affections in the laryngeal mucous membrane similarto those which are found in the skin; glanders and rhinoscleromachanges analogous to those in the nasal cavity. In syphilis there form either erosions of the mucous membrane or BRONCHIAL CATARRH 271 gummata. The latter usu
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
