This can also be called small-for gestational age (SGA) or fetal growth restriction. There are basically two different types of IUGR: Symmetric or primary IUGR is characterized by all internal organs being reduced in size. Symmetric IUGR accounts for 20% to 25% of all cases of IUGR.
Fragile X syndrome (FXS), also known as MartinâBell syndrome, or Escalante's syndrome (more commonly used in South American countries), is a genetic syndrome.
Fragile X syndrome carrier status is often diagnosed in these three ways: 1  evaluation for cause of POI. 2  cascade testing when a family member is found to have Fragile X syndrome, FXPOI, or FXTAS. 3  preconception or prenatal carrier testing.