Congenital diaphragmatic hernia In most cases, postnatal diagnosis is done and up to 2011, only four cases are reported via prenatal diagnosis. Congenital diaphragmatic hernia and intrauterine growth retardation (these two signs put the patients at the risk of afflicting with r15) by fetal ultrasound (Obstetric ultrasonography) at the time period of 16–24 weeks, further investigation and diagnostics (such as karyotyping) must be performed to test the possibility of<unk> . Postnatal diagnosis Patients could be considered to have<unk>  if they are found with:growth deficiency, café-au-lait spots, bone age delay and simian crease or other dysmorphic features after birth.
Ring chromosome 15
Ring chromosome 18
Ring chromosome 22
X chromosome
Y chromosome
Dup15q
Distal 18q-
Ethosome