Moderate to severe mental retardation may also be present. [rarediseases.org]

Diaphragmatic hernia was present in all cases, anorectal anomalies and cleft palate in two cases (7,8). Sacral appendage was present in only one case in addition to the present case (8). [latunisiemedicale.com]

• Psychomotor Retardation

  […] and mental activity (psychomotor retardation). [rarediseases.org]

• Hyperactivity

  The patient showed hyperactivity, hand-flapping, short-stature, eye abnormalities, and hypotonia, which have been reported in males with tetrasomy of chromosome 15. [deepblue.lib.umich.edu]

Standard Therapies Treatment The treatment of Chromosome 9, Tetrasomy 9p is directed toward the specific symptoms that are apparent in each individual. [rarediseases.org]

Associated diaphragmatic hernia makes poor prognosis and leads to perinatally death. Pallister PD, Meisner LF, Elejalde BR, et al. The Pallister mosaic syndrome. In: Bergsma D, Lowry RB. eds. [latunisiemedicale.com]