Fetal Inclusion (s)
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Fetal inclusion refers to a type of congenital malformation where parts of an underdeveloped twin fetus are located inside the body cavity of another normally developing fetus. According to experimental teratology, such malformations result from abnormalities in the cleavage of the blastomere of the corresponding egg.
Encyclopedia entry (1928–1936)
OCCLUSIO FOETALIS, s. inclusio foetalis (Latin), literally means congenital inclusion. The term refers to that variety of double malformations in which any parts of an underdeveloped twin fetus are placed inside the body cavity of another fetus that developed correctly. The origin of such malformations, according to data from experimental teratology, is explained by violations in the cleavage of the blastomere of the corresponding egg, namely in the separation of a part of the latter's material. This part subsequently develops somewhere in an unusual place, inside the main part of the fetus, which undergoes generally correct development. Occlusion in odontology-see Mastication. O. pupillae-see Iritis.
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Cite this page
“Fetal Inclusion (s).” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/fetal-inclusion/