Chromosome 18 abnormalities are caused by a change in a person's genetic make-up.  In this section, you will learn more about the genetic basis of chromosome 18 abnormalities.  This information may be helpful in understanding the underlying cause of the condition as well as the implications for other family members.

Chromosome 18 abnormalities are caused by a change in a person's genetic make-up.  In this section, you will learn more about the genetic basis of chromosome 18 abnormalities.  This information may be helpful in understanding the underlying cause of the condition as well as the implications for other family members.