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| | MedFriendly.com: Trisomy |
 | | Down's syndrome is an abnormality that is present from birth that results in mental impairments and a characteristic physical appearance (small facial features, large tongue that sticks out, flatness in the back of the head, and hands that are short and broad). |
 | | Patau's syndrome is a disorder characterized by mental retardation, abnormally formed ears, a small jaw, heart defects, abnormal flexing of the fingers, an extra finger or an extra toe, abnormally rotated intestines, kidney defects, and other abnormalities. |
 | | Edwards syndrome is a disorder characterized by mental retardation, abnormal skull shape, abnormally shaped ears that are positioned low on the head, heart defects, a small jaw, abnormal flexing of the fingers, and other abnormalities. |
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