. The elements of pathological histology with special reference to practical methods . nterspersed aggregations ofcells renders this explanation apparently inadequate. Cysts of variable size (Fig. 217, a) are also found in polypi, theformation of which is to be ascribed to the adhesion of the apicesof adjacent papillary outgrowths, as well as to closure and dilatationof the tubular depressions already mentioned above. Enlargementmay take place by disappearance of the septa of neighbouringcysts. Their epithelium is mostly cylindrical, often ciliated, butconsiderable tracts of it are sometimes d
. The elements of pathological histology with special reference to practical methods . nterspersed aggregations ofcells renders this explanation apparently inadequate. Cysts of variable size (Fig. 217, a) are also found in polypi, theformation of which is to be ascribed to the adhesion of the apicesof adjacent papillary outgrowths, as well as to closure and dilatationof the tubular depressions already mentioned above. Enlargementmay take place by disappearance of the septa of neighbouringcysts. Their epithelium is mostly cylindrical, often ciliated, butconsiderable tracts of it are sometimes desquamated. It is notuncommon to find in the interior of cysts peculiarly-formed cellularstructures which certainly owe their origin to the epithelial the first place there are round finely granular cells with adiameter of as much as Ol mm. and nuclei measuring up to 1 m POL ypi 438 in breadth. Many of these cells bear either one or two spine-likeprocesses, homogeneous and glassy, and measuring up to 0*04 length (Fig. 219); others are branched in a stellate manner or. Fin. 210.—Cells from Cvst in a Polypus of the Tympanic Cavity, x 440. (Alum cochineal.) fringed with cilia. Furthermore, fibres of a glassy clearness formin cvsts, often fillino; them, but havinsj no organic connection withtheir walls. These fibres show a parallel stratification, are inter-spersed with scanty nuclei, and are not unlike the tissue of tendons,though merely epithelial products (Fig. 220).
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
