About The Medical Condition Partial Trisomy 21 Down Syndrome
Find the definition of the medical term Partial Trisomy 21 Down Syndrome. Partial Trisomy 21 Down Syndrome defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Partial Trisomy 21 Down Syndrome
| Partial Trisomy 21 Down Syndrome Medical Condition |
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What's The Definition Of The Medical Condition Partial Trisomy 21 Down Syndrome?
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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