Abstract
Placental villi can be classified into subtypes that differ principally in their caliber, stromal, and vessel architecture, position within the villous tree, and function (Fig. 7.1). Several classification systems have been used in the past, but the one most commonly employed today was introduced by Kaufmann and colleagues (1979). This recognizes the following villous types (Fig.7.2).
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Benirschke, K., Burton, G.J., Baergen, R.N. (2012). Architecture of Normal Villous Trees. In: Pathology of the Human Placenta. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23941-0_7
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