TRISOMY 18 You may have never heard the term T18 or Trisomy 18, or the formal name of Edward's Syndrome.  It is known as a chromosomal abnormality with an extra string on 18, which makes it "incompatible with life," as they say.  You may be more familiar with T21 or "Downs … [Read more...] about A Hole in a Mothers Heart- Trisomy 18