File:Mall Meyer1921 fig10.jpg

Fig. 10. Detached conceptus, still in utero

No. 1224. X6.

A very interesting specimen belonging to this group is No. 1224, a portion of which is represented in figure 10. This specimen was received in an unopened uterus removed by hysterectomy for cervical myoma. The conceptus, which measures 36 by 25 by 13 mm., was collapsed, free in the uterus, and embedded in mucus. The only content of the chorionic vesicle was a dark-grayish coagulum which contained no remnant of the embryo or of the amnion. This amorphous magma included only a few isolated cells, yet in spite of this fact the trophoblast, which had markedly proliferated, was well preserved over large areas and many of the vessels in the chorionic membrane were filled completely with erythroblasts. A few degenerate masses of trophoblast and fused degenerate villi also were present. Some of the villi show evidences of maceration, others of mucoid hydatiform degeneration, as shown in figure 12, although they still may contain vessels. Some, however, are represented by a hyalin outline only. Both the stroma and the epithelium of many of the villi are well preserved, however, and the same thing holds for the chorionic membrane.

Plate 1: Fig 6 | Fig 7 | Fig 8 | Fig 9 | Fig 10 | Fig 11 | Chapter 4 Pathologic analysis

Embryology - 19 Apr 2024        Expand to Translate
Google Translate - select your language from the list shown below (this will open a new external page)
العربية | català | 中文 | 中國傳統的 | français | Deutsche | עִברִית | हिंदी | bahasa Indonesia | italiano | 日本語 | 한국어 | မြန်မာ | Pilipino | Polskie | português | ਪੰਜਾਬੀ ਦੇ | Română | русский | Español | Swahili | Svensk | ไทย | Türkçe | اردو | ייִדיש | Tiếng Việt    These external translations are automated and may not be accurate. (More? About Translations)

Mall FP. and Meyer AW. Studies on abortuses: a survey of pathologic ova in the Carnegie Embryological Collection. (1921) Contrib. Embryol., Carnegie Inst. Wash. Publ. 275, 12: 1-364.

In this historic 1921 pathology paper, figures and plates of abnormal embryos are not suitable for young students.

1921 Carnegie Collection - Abnormal: Preface | 1 Collection origin | 2 Care and utilization | 3 Classification | 4 Pathologic analysis | 5 Size | 6 Sex incidence | 7 Localized anomalies | 8 Hydatiform uterine | 9 Hydatiform tubal | Chapter 10 Alleged superfetation | 11 Ovarian Pregnancy | 12 Lysis and resorption | 13 Postmortem intrauterine | 14 Hofbauer cells | 15 Villi | 16 Villous nodules | 17 Syphilitic changes | 18 Aspects | Bibliography | Figures | Contribution No.56 | Contributions Series | Embryology History

Historic Disclaimer - information about historic embryology pages

Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)