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THE RECTAL FACTOR

HERBERT I. KALLET, M.D.

Am J Dis Child. 1933;45(6):1221-1222.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

In reviewing the embryology of the gastro-intestinal tract, one notes that originally this is not a continuous canal. The primitive hindgut terminates as a blind sac called the cloaca, which is the anlage of certain genito-urinary as well as of intestinal elements. A plug of tissue, termed the anal plate, separates the cloaca from the ectoderm. The latter in turn dips inward, forming what is called the proctodeum. As the embryo develops, this plug is gradually absorbed, so that by the eighth week or earlier there is a complete union of the hindgut with the proctodeum.

Should arrest or distortion of this process occur, there results an anomaly or a malformation. These congenital defects are so spectacular that they present no diagnostic problem. It must be borne in mind, however, that while these malformations are rare, the line of fusion of the proctodeum with the entoderm in every new-born infant . . . [Full Text PDF of this Article]

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