\"Trisomy 18\" \u2013\u00a0What Is It?<\/h2><\/div>
<\/div><\/div><\/div><\/div>
<\/div><\/div><\/div>
Trisomy 18 is a serious genetic disorder caused by an extra chromosome 18. Affected children have various malformations, impaired growth, delayed development, and reduced intelligence. In the first five years of life, 90% of those affected die due to heart or kidney abnormalities, nutritional disorders, infections, or apnea. Children with mosaicism or partial trisomy 18 have a better prognosis. Hepatoblastomas and Wilms tumors are the most common tumors. The risk of Wilms’ tumors is about 1%.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div>
Overview of the Chapters on This Page:<\/h4><\/div><\/div><\/div>
<\/i><\/span>
Trisomy 18 \u2013 What Is It? (This Section)<\/div><\/li><\/ul><\/div><\/div>