IntroductionUltrasound is a method of tracking deviations fetal growth. In 75% of cases of fetal growth restriction (CIR), biological or constitutional factors are associated.Methods InvolvedThe cases were selected retrospectively from the personal archive of the authors, cases and situations experienced that can lead to misinterpretation by the sonographer on suspicion of CIR in order to discuss the sonographic diagnostic criteria.DiscussionThe triad: amniotic fluid, placenta and fetal movement activates normal are great indicators to rule out other etiologies involved in the genesis of the CIR. The normal fetal morphology is important to exclude malformations and chromosomal defects that cause the CIR also symmetrical. The fetuses with growth restriction of symmetrical (fetal weight below the 10th percentile for gestational age referred to) have different etiologies and may be maternal (congenital infections, chromosomal disorders, chromosomal abnormalities not like gastroschisis, irradiation, teratogenic drugs) or constitutional.Conclusion of the PresentationThe sonographic identification of fetal weight below the 10th percentile for gestational age that should trigger the search for possible etiologies involved in low fetal weight. However, it is important biological and constitutional rule, which accounts for most cases, so that there is no premature termination of pregnancy. IntroductionUltrasound is a method of tracking deviations fetal growth. In 75% of cases of fetal growth restriction (CIR), biological or constitutional factors are associated. Ultrasound is a method of tracking deviations fetal growth. In 75% of cases of fetal growth restriction (CIR), biological or constitutional factors are associated. Methods InvolvedThe cases were selected retrospectively from the personal archive of the authors, cases and situations experienced that can lead to misinterpretation by the sonographer on suspicion of CIR in order to discuss the sonographic diagnostic criteria. The cases were selected retrospectively from the personal archive of the authors, cases and situations experienced that can lead to misinterpretation by the sonographer on suspicion of CIR in order to discuss the sonographic diagnostic criteria. DiscussionThe triad: amniotic fluid, placenta and fetal movement activates normal are great indicators to rule out other etiologies involved in the genesis of the CIR. The normal fetal morphology is important to exclude malformations and chromosomal defects that cause the CIR also symmetrical. The fetuses with growth restriction of symmetrical (fetal weight below the 10th percentile for gestational age referred to) have different etiologies and may be maternal (congenital infections, chromosomal disorders, chromosomal abnormalities not like gastroschisis, irradiation, teratogenic drugs) or constitutional. The triad: amniotic fluid, placenta and fetal movement activates normal are great indicators to rule out other etiologies involved in the genesis of the CIR. The normal fetal morphology is important to exclude malformations and chromosomal defects that cause the CIR also symmetrical. The fetuses with growth restriction of symmetrical (fetal weight below the 10th percentile for gestational age referred to) have different etiologies and may be maternal (congenital infections, chromosomal disorders, chromosomal abnormalities not like gastroschisis, irradiation, teratogenic drugs) or constitutional. Conclusion of the PresentationThe sonographic identification of fetal weight below the 10th percentile for gestational age that should trigger the search for possible etiologies involved in low fetal weight. However, it is important biological and constitutional rule, which accounts for most cases, so that there is no premature termination of pregnancy. The sonographic identification of fetal weight below the 10th percentile for gestational age that should trigger the search for possible etiologies involved in low fetal weight. However, it is important biological and constitutional rule, which accounts for most cases, so that there is no premature termination of pregnancy.