Articoli correlati a The Reproductive Process; Its Histology, Physiology,...
The Reproductive Process; Its Histology, Physiology, and Pathology. Demonstrating the Unity of the Anatomical Type of the Placenta in All the Mammalia - Brossura
Sinossi
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884. Excerpt: ... CHAPTER XIV. ABNORMAL DEVELOPMENT OF THE PLACENTA. Although the complicated and successive phases through which the normal development of the placenta passes render probable many anomalies and marked modifications, still they have not yet been defined, much less demonstrated. When treating of syphilitic lesions of the placenta, I cited a morbid form which I called angioma of the decidua vera and serotina. This change might easily be classified in the category under consideration, and be reduced definitely to a phase of abnormal vascularization. As a further contribution to the subject, I now offer the description of a most interesting specimen which takes away all ambiguity and teaches much in relation to the irregularity and abnormal placental development. The specimen belonged to an abortion at the fifth month. No lesion was noticed in its fresh condition, and not until microscopic examination was made. After being hardened in alcohol and cut vertically, it showed, imperfectly formed, two layers, one, the more dense, towards the uterine surface, and the other spongy, having the normal placental characteristics about the foetal surface. Microscopical examination of the sections showed that the development of the placenta was normal in the spongy portion, but that the villi had not yet reached the compact layer, and the development of the lacunae was arrested in the state of their early formative process. The cells of the serotina preserved their form and ordinary size; the lacunae were very small, and a few of them presented the characteristics of dilated vessels. Towards the uterine surface, a utero-placental vessel, somewhat dilated, had no resemblance to the lacunae. Towards the foetal surface, the dilatation of the utero-placental vessels had been ar...
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