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Up to: Hereditary disease · Partial trisomy/tetrasomy of the short arm of chromosome 18
Tetrasomy 18p
Tetrasomy 18p is a very rare structural chromosomal anomaly affecting multiple body systems and characterized clinically by craniofacial abnormalities, delayed development, cognitive impairment, changes in muscle tone, distinctive facial features, and rarely renal malformations.
This condition has no sub-types.