Could you tell me more about edwards' syndrome?

EDWARDS SYNDROME: A chromosomal disorder: trisomy 18. 1/ 6000 births. Low birth wt, closed fists w/index finger overlaping 3rd and 5th overlaping the 4th; small head with prominent occiput; small mandible; short sternum; rocker bottom feet; narrow hips with limited abduction; heart and kidney malformations; mental retardation........ 95% lethal in the 1st. Year.