The changes in the myenteric plexus remained present also in the small intestine and stomach and esophagus of fetuses exposed to ethylenethiourea showing frequency of ICCs 8.6 and 9.7 cells/mm2 and frequency of ganglion cells of 12.9 and 14.6 cells/mm2 in the small intestine and stomach, and esophagus compared with the control group and 17.5 18.6 cells / cells/mm2 and 21.3 and 23.9 cells/mm2 in the small intestine, stomach and esophagus, respectively, demonstrating that the changes in this model were not restricted to the pelvic region, but reaching the entire gastrointestinal tract similarly, showed that there was a statistically significant