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.
ï»¿ Triple X syndrome is a chromosomal variation which is indicated by the presence of one extra X chromosome in each cell of a human female. Unlike most other chromosomal conditions, there is usually no noticeable difference to the naked eye between women with triple X syndrome and the rest of the female population.n most cases triple X syndrome is asymptomatic. This is because Lyonization (or X-inactivation) causes one of the two copies of the X chromosome in a normal female cell to de-activate. Usually this process also de-activates the extra X chromosome in superfemales.