. American journal of obstetrics and gynecology. Fig. 1.—Fulminant case of eclampsia with convulsions. Placenta showed old whiteInfarcts and recent hemorrhages. A, Photomicrograph showing old area of degenera-tion. B, circumscribed hemorrhage, diffuse hemorrliages and marlted congestion. her organs, which also affects the fetus even to causing its death,might also affect the placenta which is the intermediary organ be-tween these two living organisms. The occurrence of the placentalchanges could be explained consistently with either the fetal ormaternal origin of these toxemias. ADAIR : PLACEN


. American journal of obstetrics and gynecology. Fig. 1.—Fulminant case of eclampsia with convulsions. Placenta showed old whiteInfarcts and recent hemorrhages. A, Photomicrograph showing old area of degenera-tion. B, circumscribed hemorrhage, diffuse hemorrliages and marlted congestion. her organs, which also affects the fetus even to causing its death,might also affect the placenta which is the intermediary organ be-tween these two living organisms. The occurrence of the placentalchanges could be explained consistently with either the fetal ormaternal origin of these toxemias. ADAIR : PLACENTA INFARCTS 555 With these introductory remarks we will pass to a more definiteconsideration of the so-called placental infarcts. In von WJnckels Bandbuch (1906) they are described as nodes or layers offibrin which occur frequently in the placenta, sometimes as amorphous, homogeneouslayers. They are especially apt to occur where fibrin may be formed, as on the sur-face of the decidua basalis and septa placentae. They are absent at the opening


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