[PECULIARITIES OF DEVELOPMENT OF THE CORPUS CALLOSUM OF THE BRAIN IN LARGE FETUSES ACCORDING TO THE ULTRASONOGRAPHIC DATA].

To examine the dynamics of prenatal development of the corpus callosum (CC) of the brain, a prospective cohort study was conducted in 100 large fetuses (with the birth weight of 4000 g or more, the average for the group equal to 4350±250 g) with symmetrical and asymmetrical development according to weight-tolength ratio. The control group consisted of 50 fetuses with an average body weight of 3452±287 g. Measurements of length, thickness and width of CC were performed using multiplanar technique of ultrasound imaging. The deceleration of the rate of growth of CC length was detected in large fetuses after 33rd week as compared to that in control group. In a comparative analysis of CC parameters in large fetuses depending on the symmetry of their development, significantly lower values of its length were found after 27 weeks in fetuses with an asymmetrical growth. CC width in large fetuses with an asymmetrical development was significantly smaller than that in symmetrical development from 21st week of gestation till term.