About The Medical Condition Trisomy 21, Meiotic Nondisjunction

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Find the definition of the medical term Trisomy 21, Meiotic Nondisjunction. Trisomy 21, Meiotic Nondisjunction defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.

Trisomy 21, Meiotic Nondisjunction

Trisomy 21, Meiotic Nondisjunction Medical Condition Defined & Explained
Trisomy 21, Meiotic Nondisjunction Medical Condition

What's The Definition Of The Medical Condition Trisomy 21, Meiotic Nondisjunction?

A chromosome disorder associated either with an extra chromosome 21 or an effective trisomy for chromosome 21. Clinical manifestations include hypotonia, short stature, brachycephaly, upslanting palpebral fissures, epicanthus, Brushfield spots on the iris, protruding tongue, small ears, short, broad hands, fifth finger clinodactyly, Simian crease, and moderate to severe MENTAL RETARDATION. Cardiac and gastrointestinal malformations, a marked increase in the incidence of LEUKEMIA, and the early onset of ALZHEIMER DISEASE are also associated with this condition. Pathologic features include the development of NEUROFIBRILLARY TANGLES in neurons and the deposition of AMYLOID BETA-PROTEIN, similar to the pathology of ALZHEIMER DISEASE. (Menkes, Textbook of Child Neurology, 5th ed, p213)

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