![]() ![]() The sex ratios (male/female) for multiple vertebral anomalies and solitary vertebral anomalies are respectively 0.31 and 0.68. The birth rate of hemivertebrae is 0.05–0.10%, occurring more commonly in females. Hemivertebra is a rare congenital vertebral abnormality that can lead to deformation of the spine, such as scoliosis, lordosis, or kyphosis, and it is usually located in the thoracic and lumbar regions. In addition, fetal MRI will confirm the diagnosis of hemivertebrae and provide parents with helpful information for their decision about the fate of the affected fetus. Conclusionsīased on our center’s experience, comprehensive ultrasonography is necessary for early prenatal diagnosis of this condition. These three babies were all in good health during follow-up. The other couple decided to continue the twin pregnancy and gave birth to two living newborns weighing 2580 g and 2060 g at 37 + 1 gestational weeks. One couple chose selective termination of the hemivertebrae fetus after they were extensively counseled by the multidisciplinary team regarding the treatment and prognosis of the hemivertebrae twin, and a healthy baby weighing 2320 g was delivered at the 37 + 1 gestational week. These two cases of congenital fetal hemivertebrae in one fetus of a DCDA twin were both initially found by ultrasonography and confirmed by fetal magnetic resonance imaging (MRI). We have also conducted a literature review of its prenatal screening, diagnosis, management, and outcomes. We report two cases of congenital fetal hemivertebrae, each affecting one fetus in a dichorionic diamniotic (DCDA) twin pregnancy. ![]() However, reports of hemivertebrae in twins during the perinatal period are very rare. Congenital fetal hemivertebrae could be diagnosed by ultrasonography and confirmed by fetal magnetic resonance imaging during pregnancy. Hemivertebra deformity, involving one or multiple vertebral bodies, is one of the important causes of congenital scoliosis. ![]()
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