The pathology and surgical treatment of tumors . ogical ii6 PATHOLOGY AND TREATMENT OF TUMORS. function of the skin, active tissue-proliferation of the cells composing-the cyst-wall sets in, resulting in the formation of the cyst-contents. Although these cysts are by no means common, being less frequentthan congenital branchial fistulae, a sufficient number of cases have beenplaced on record to remove all doubt as to the etiological relationsexisting between imperfectly obliterated branchial clefts and the serous,the dermoid, and the so-called deep-seated atheromatous tumors ofcongenital origi
The pathology and surgical treatment of tumors . ogical ii6 PATHOLOGY AND TREATMENT OF TUMORS. function of the skin, active tissue-proliferation of the cells composing-the cyst-wall sets in, resulting in the formation of the cyst-contents. Although these cysts are by no means common, being less frequentthan congenital branchial fistulae, a sufficient number of cases have beenplaced on record to remove all doubt as to the etiological relationsexisting between imperfectly obliterated branchial clefts and the serous,the dermoid, and the so-called deep-seated atheromatous tumors ofcongenital origin located in the regions formed by the branchial tumors have been made a special object of study by Langen-beck, Liicke, Gurlt, Virchow, Schede, Esmarch, and Hensinger. Classification.—Branchial cysts must be classified according totheir contents. The cyst-wall being lined with epithelium displacedfrom the pharynx or from the skin, the only histological element inthe contents is epithelium (Fig. 445). The wall is composed of con-. FlG. 445.—Structure of wall of branchial cyst, from case represented in Figure 444; X 280: a, blood-vessel; b, inflammatory infiltration ; c, connective tissue; d. epithelial lining of cyst; e, contents of cyst. nective tissue lined on the inside with epithelial cells. In most instancesthe epithelium lining the cyst-wall and contained in the cyst-contentsrepresents the epithelium of the skin (Fig. 446); but Rehn discovered,in a blind congenital fistula ending near the mucous membrane of thepharynx, ciliated epithelium, which, of course, must have been derivedfrom the pharynx. Neumann found cylindrical and pavement epithe-lium in two tumors of the neck ; one of the tumors was con-genital, while the other was developed in later years. The presenceof ciliated epithelium may be explained by assuming its origin to havebeen in the upper part of the cleft, the fornix pharyngis, where these TERATOMA. 617 fistulae oftentimes end and wh
Size: 1633px × 1529px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
