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Unusual Shapes of the Placenta. Placenta Accreta

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Abstract

The usual round or oval outline of the placenta may be replaced by a wide spectrum of shapes which Shanklin has called “errors in outline”. On occasion, these abnormally shaped organs assume clinical significance but, on the whole it is difficult to be certain that they all represent truly pathologic events. Certainly, many are compatible with perfectly normal fetal development and in most instances of placentas with unusual shape, the progress of pregnancy or parturition is not endangered. These unusual shapes should perhaps better be considered as variations of the normal, and an infinite spectrum it is. HYRTL has depicted many of these specimens in his magnificent atlas and Grosser has discussed views concerning the mechanism of formation of some of the abnormally shaped placentas. In recent years, less attention has been paid to this subject as it has become recognized that other placental disturbances are of greater significance to fetal development than is the shape of the placenta.

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Strauss, F., Benirschke, K., Driscoll, S.G. (1967). Unusual Shapes of the Placenta. Placenta Accreta. In: Strauss, F., Benirschke, K., Driscoll, S.G. (eds) Placenta. Handbuch der Speziellen Pathologischen Anatomie und Histologie, vol 7/5. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-25615-2_3

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