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Figure 4.3. In the lateral view of the same infant note the lobeless pinnae and micrognathia. The external auditory canals are narrow.

Figure 4.4. This same infant with Wolf-Hirschhom syndrome had a posterior midline scalp defect which is seen in about 10% of these infants. He also had hypospadias and cryptorchidism, a finding frequently associated with this syndrome.

Other findings in infants with this syndrome include coloboma of the iris, simian crease, hypoplastic dermal ridges, talipes equinovarus, and cardiac anomalies. Radiologically there may be fusion of the ribs and dislocation of the hips.

Figure 4.5. Deletion of the short arm of chromosome number 5 (5p- syndrome, cri du chat syndrome) is present in this infant; his twin was normal. Note the craniofacial disproportion, with microcephaly, round face, dysplastic low-set ears, the downward (anti mongoloid) slant of the palpebral fissures, hypertelorism, and micrognathia. The typical cat cry (high-pitched mewing cry) was present. The cat cry is due to a narrow larynx, and occurs as a result of the cords being approximated anteriorly leaving a narrow opening posteriorly. It is not present in all infants and disappears as the infant grows.

Figure 4.6. The lateral view of the same infant shows the low-set ears, flattened nose, and micrognathia.

Figure 4.4. This same infant with Wolf-Hirschhom syndrome had a posterior midline scalp defect which is seen in about 10% of these infants. He also had hypospadias and cryptorchidism, a finding frequently associated with this syndrome.

Other findings in infants with this syndrome include coloboma of the iris, simian crease, hypoplastic dermal ridges, talipes equinovarus, and cardiac anomalies. Radiologically there may be fusion of the ribs and dislocation of the hips.

5psyndrome

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