Variability of the forms of the sigmorectal colon and its sigmorectal segment in fetuses and newborns.

Abstract

Development of modern pediatric surgery requires comprehensive information about morphological features of the colon in the perinatal period of human ontogenesis. Embryonic changes of the colon and its sigmorectal segment are caused by interrelation of all the structural-functional components between themselves and adjacent abdominal organs. The sigmorectal segment develops synchronically with other portions of the large intestine according to the stages of intestinal rotation and the periods of appearance of physiological hernia (Kozlov V.А., 2006, Vitenok О.Ya., 2012). In the process of the prenatal development, the formation of anatomical parts of the large intestine is associated with the periods of accelerated growth and formation of the intestinal wall structural elements. These periods correspond to the 8th, 13th, 16th and 20th weeks of ontogenesis. During 8-10 months the sigmorectal segment can reach the terminal portion of the colon or sacroiliac joint (Moldavskaya А.А.2006, Proniayev D.V., 2007). The aim of the study. To examine variable anatomy of the sigmoid colon and development of topographic-anatomical interrelations of the sigmorectal segment in the perinatal period of human ontogenesis.