Closed spinal dysraphism (CSD) (also known as occult spinal dysraphism or spina bifida occulta) is characterized by failure of fusion of the vertebral bodies due to abnormal fusion of the posterior vertebral arches, with unexposed neural tissue; the skin overlying the defect is intact.

2019年12月1日 · Closed spinal dysraphism is also referred to as occult spinal dysraphism (OSD). In these lesions, the neural tissue is covered with skin, making the diagnosis less apparent. Isolated vertebral defects are the most common and least severe form of OSD.

Occult spinal dysraphism (OSD) is a set of malformations that involve defects of neurulation of the spinal cord or a defect in the skeletal investment of the neural tube, including malformations of all the tissue layers in the midline of the back.

2024年11月4日 · Spinal dysraphisms refer to a broad group of malformations affecting the spine and/or surrounding structures in the dorsum of the embryo. They are a form of neural tube defect.

2023年12月20日 · The clinical manifestations of closed (occult) spinal dysraphism (see 'Terminology' below) vary widely and range from benign or asymptomatic to severe neurologic, genitourinary, gastrointestinal, or musculoskeletal anomalies. The pathogenesis and types of closed spinal dysraphism will be discussed here.

Occult spinal dysraphism (OSD) is characterized by a spinal anomaly covered with skin and hence with no exposed neural tissue [1,2]. The OSD spectrum includes the following: dorsal dermal sinus, thickened filum terminale, diastematomyelia, caudal regression syndrome, intradural lipoma, lipomyelocele, lipomyelomeningocele, split nodal cord ...

Spinal lipomas are the most common type of occult spinal dysraphism. The incidence of spinal lipoma is approximately one fifth that of neural tube defects 12 and is present in 1:4000 births.

2005年3月1日 · In occult spinal dysraphism, there is a congenital absence of a spinous process and variable amounts of lamina resulting in neural tissue that lies just deep to an intact layer of skin. In contrast, open dysraphism is characterized …

This volume covers the known details of all subtypes of occult spinal dysraphism in unprecedented detail. This 21 chapter invaluable resource begins with a deep dive into the history and embryology of occult spinal dysraphisms.

Occult spinal dysraphism (OSD) is characterized by a spinal anomaly covered with skin and hence with no exposed neural tissue [1,2].