Table 2.

Prenatal ultrasound features, associated anomalies and genetic abnormalities of 81 fetuses with congenital microtia.

Associated abnormality	Positive signals
Other auricle abnormality	Low-set ears
	Accessory auricle
Nervous system anomalies	Sacrococcygeal teratoma
	Vertebral anomalies
	Corpus callosum dysgenesis, Dandy-Walker
	Corpus callosum dysgenesis
Facial anomalies	Micrognathia
	Micrognathia, cleft palate
	Unilateral transverse facial cleft
	Cleft palate
Thoracic cavity anomalies	Absent thymus, pulmonary dysplasia
	Diaphragmatic hernia, congenital cystadenoma malformation
Cardiac anomalies	Double outlet of right ventricle, Ventricular septal defect
	Pericardial effusion
	Ventricular septal defect
	Ventricular septal defect, persistent left superior vena cava
	Ventricular septal defect, aortic translocation
	Coarctation of aorta
Digestive tract anomalies	Esophageal atresia
	Duodenal atresia
Urogenital system anomalies	Hydronephrosis
	Ectopic kidney
	Horseshoe kidney
Limb anomalies	Hand posture abnormalities
	Overlapping fingers
	Knee posture abnormalities
Ultrasonographic soft marker anomalies	Oedema
	Hypoplastic placenta
	Nasal bone absence
	Polyhydramnios
	Cystic hygroma of the neck
	Abnormal septa pellucida
	Single umbilical artery
	Choroid plexus cyst, nasal bone absence
	Choroid plexus cyst, polyhydramnios
	Single umbilical artery