Research Article

Etiological Analysis of Neurodevelopmental Disabilities: Single-Center Eight-Year Clinical Experience in South China

Table 5

Congenital dysmorphic disorders in the patients with genetic diseases in Table 3.

DisordersCasesMain clinical/imaging features

Cortical dysplasia1Motor developmental retardation and microcephaly. Severe cortex dysplasia in parietal lobe and frontal, temporal and occipital lobes, respectively, on cranial MRI scanning.

Tuberous sclerosis1Intelligence and motor retardation, seizures, cutaneous hypomelanotic macules, fondus ocili depigmentation, and subependymal nodules and calcified lesions in the cortex of parietal and temporal lobes on cranial CT scanning

Miller-Dieker syndrome2Intelligence and motor retardation, microcephaly, prominent occiput, narrow forehead, small nose and chin. Seizure in 1 case and hypertonia in another one. Agyria/pachygyria cortical malformations on MRI.

Muscle-Eye-Brain disease2Sibling sisters with global developmental delay. Abnormal pupils and vitreous bodies in both cases on ophthalmologic examination. Convulsions in 1 case and small right eyeball in another. Both have increased creatine kinase levels and cobblestone cortical malformations on MRI.

Isolated lissencephaly sequence1Intelligence and motor retardation, and bilateral thickened and irregular cortex on MRI

Lissencephaly with cerebellar hypoplasia1Mental/language retardation, drooling, and bilateral pachygyria malformation and hypoplasia of cerebellum revealed by MRI.

Other malformations of cortical development6All have intelligence and motor retardation. Including 2 cases of cobblestone cortical malformations and 1 classic lissencephaly revealed by CT/MRI.

Dandy-Walker syndrome1Intelligence and motor retardation with low-set and everted ears, and hypoplasia and upward rotation of the cerebellar vermis and cystic dilation of the fourth ventricle on MRI.

Spinocerebellar ataxia1Intelligence and motor retrogression, and severe cerebellar and pons atrophy together with tiger-eye-like sign at the basal ganglia level and cross-sign at pons level, respectively, on MRI.

Neurofibromatosis type I1Intelligence and motor retardation, and 7 cutaneous cafe-au-lait patches with diameter over 10 mm

Silver-Russell syndrome2Both have dysmorphic facial features including triangular face, low-set ears, flat nasal bridge with extroversion of nostrils and down-curving mouth corners. Normal head circumference. Asymmetry of the lower extremities. Postnatal failure to thrive. Intrauterine retardation in 1 case and linea alba hernia in another.

Noonan syndrome1Short stature, short neck with redundancy of skin, hypertelorism, downward eyeslant, low-set ears, cryptorchidism, and poor sucking. Atrial septal defect and right pulmonic stenosis on ultrasonography.

Poland–Moebius syndrome1Signs of facial palsy, disappeared corneal reflex, and poor sucking and swallowing. Micrognathia and high-arched palate. Small left hand, ipsilateral brachydactyly and hypoplasia of the nails and pectoralis major muscle.

Crisponi syndrome1Convulsions in response to stimuli like crying and bathing. Camptodactyly in hands. Round face, broad nose with anteverted nostrils, and micrognathia. Major sucking difficulty and frequent apnea. Hyperthermia that led to death.