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Nicklaus Children’s Hospital has several outpatient and urgent care centers throughout South Florida, including on-demand, virtual care.
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Also known as: chromosomal abnormalities, numerical abnormalities, human chromosomal disorders.
Trisomies and monosomies are two types of chromosomal abnormalities. Specifically, a trisomy is when a person has three of a particular chromosome, instead of the usual two. A monosomy is when they just have one chromosome instead of the usual two.
Trisomies and monosomies are the result of changes in chromosomes division before conception.
Occasionally trisomies can pass from one generation to the next, but they usually occur randomly.
Reviewed by: Mislen S Bauer, MD
This page was last updated on: January 03, 2022 04:30 PM
Trisomy 13 is a chromosome disorder that is present at birth. Patients with the condition have a third copy of chromosome 13 in their cells, which leads to a variety of lifelong symptoms ranging from intellectual disability to heart defects, spine abnormalities, cleft palate and more.
Trisomy 18 is a chromosome disorder that is present at birth. Patients with the condition have a third copy of chromosome 18 in their cells, which leads to a variety of lifelong symptoms ranging from intellectual disability to heart defects, a small and abnormally shaped head, low birth weight, clenched and overlapping fingers and more.