A system of obstetrics . Cystic Degeneration of the Chorion (Virchow). where the decidual covering is absent, reveals innumerable small cysts,some as lar^e as grapes or even as hens eggs, connected one with theother or with the base of the chorion by pedicles of varying liquid content of the cysts is usually clear and translucent. A mi-croscopic examination of a section through a villus in the early stagesof cystic degeneration will show the distended cells of which Priestleyspeaks, or else there may be seen the outer cellular and inner fibrous wallof a villus, while within the i
A system of obstetrics . Cystic Degeneration of the Chorion (Virchow). where the decidual covering is absent, reveals innumerable small cysts,some as lar^e as grapes or even as hens eggs, connected one with theother or with the base of the chorion by pedicles of varying liquid content of the cysts is usually clear and translucent. A mi-croscopic examination of a section through a villus in the early stagesof cystic degeneration will show the distended cells of which Priestleyspeaks, or else there may be seen the outer cellular and inner fibrous wallof a villus, while within the interior will be stellate connective-tissuecells, in the interstices between which may be found mucous Winogradow: Virch. Arch., 1870, Bd. li. S. 146. 2 Loc. tit., p. 37. THE CHORION. 235 The fluid contained in the cysts gives evidence on chemical examina-tion of the presence of mucin and albumen in considerable quantities. Fig. (A) Extremity of a Villus in Early Stage of Cystic Degeneration: A shows the first stage ofenlargement in the cells of the villus trunk : B, a somewhat more advanced stage, showinghyaline cells escaping from the ruptured capsule of a young cyst (Priestley). (B) Terminal Villus of Cystic Chorion: A, stellate connective tissue; B, C, inner and outer lay-ers of wall; D, early stage of if (Braxton Hicks). Within the centre of the vesicular mass is usually to be found ashrivelled or distorted foetus surrounded by its amnion, which occasion-ally contains an abnormal quantity of fluid (hydramnion). Occasion-ally, however, no trace of an embryo is to be discovered, or at mostthere may be seen only the remnants of an umbilical cord. Morerarely the foetus, although dead, is apparently well developed for thedate of pregnancy,1 and if the degeneration of the chorion has not beentoo extensive, a living, healthy infant may be born along with a It has been already noted that betwe
Size: 2157px × 1158px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
