File:Meyer1920 fig02.jpg

Fig. 2.

The tubal mucosa is larger and the tubal wall partly destroyed by the invading trophoblast. Only a few small vestiges of the walls of the villous vessels remain, and the stroma of all the villi has undergone changes characteristic of hydatiform degeneration represented in figure 2.

One villus also contains an epithelial cyst resulting from epithelial invagination with subsequent isolation of the distal extremity, a process to be referred to later in connection with uterine specimens. Since most of the villi of this and similar specimens still are implanted in the tube, there can no longer be any question as to the time in which hydatiform changes in the stroma of the villi may be inaugurated. As illustrated in other instances in which isolated and small groups of villi still were implanted, the advent of degeneration of the stroma occurs, in part at least, before the villus is detached. Hence it is not merely a post-mortem or maceration change.

Plate 1: Fig. 1 | Fig. 2 | Fig. 3 | Fig. 4 | Fig. 5 | Fig. 6 | Fig. 7

Meyer Links: Plate 1 | Plate 2 | Plate 3 | Plate 4 | Plate 5 | Plate 6 | Contribution No.40 | Volume IX | Contributions to Embryology | Hydatidiform Mole | Tubal Pregnancy

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Reference

Meyer AW. Hydatiform degeneration in tubal and uterine pregnancy. (1920) Carnegie Instn. Wash. Publ., Contrib. Embryol., 40: 327- 364.

Cite this page: Hill, M.A. (2024, April 28) Embryology Meyer1920 fig02.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Meyer1920_fig02.jpg

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