Trisomy 18 and trisomy 13, also known as Edwards syndrome and Patau syndrome, respectively, are the most common autosomal trisomy disorders after Down syndrome (trisomy 21) [1]. The overall prevalence of trisomy
Although there are some miraculous exceptions, the medical community considers trisomy 18 syndrome to be "incompatible with life" (as opposed to less serious chromosomal abnormalities, like Turner syndrome). My old college roommate gave birth to a child with this terrible condition. Because she was...