Related Experiment Video
Updated: Jul 17, 2026

Murine Fetal Echocardiography
Published on: February 15, 2013
Sonographic features of hemivertebra at 13 weeks' gestation
Min Chen1, Ben Chan, Tina Poy Wing Lam
1Department of Obstetrics and Gynecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China. chenm@hkusua.hku.hk
Abstract:
Hemivertebra is a rare congenital spinal disorder where only one side of the vertebral body develops, leading to deformation of the spine, such as scoliosis or kyphosis. Previous reports suggest that the diagnosis may be based on antenatal sonographic examination after 14 weeks. We present the sonographic features of a fetus with solitary hemivertebra at 13 weeks' gestation confirmed by postmortem babygram, magnetic resonance imaging (MRI) and pathological examination. It shows that the condition may manifest in the first trimester of pregnancy.
Related Concept Videos
General Structure of a Vertebra
Vertebral Column: Regions and Curvature
Regions of the Vertebral Column
In an adult, the spine is subdivided into five regions: the cervical, the thoracic, the lumbar, the sacral, and the coccygeal region. The spine initially develops as a series of 33 vertebrae; after 20 years of age, the nine bones in the sacral region, five sacral, and four coccygeal bones fuse to form the...
Uterus and Cervix
The uterus is securely anchored within the pelvic cavity by paired broad ligaments on either side. It is further stabilized by three pairs of...
Spinal Cord: Cross-sectional Anatomy
Gray Matter and its Components
Central to the gray matter is...
Histology of the Uterus
The endometrium is the...
Ultrasonography
During an ultrasonography procedure, a handheld device called a...

