Spina Bifida Cystica

**Definition:** A form of spinal dysraphism associated with a protruding cyst made up of either meninges (i.e., a MENINGOCELE) or meninges in combination with spinal cord tissue (i.e., a MENINGOMYELOCELE). These lesions are frequently associated with spinal cord dysfunction, HYDROCEPHALUS, and SYRINGOMYELIA. (From Davis et al., Textbook of Neuropathology, 2nd ed, pp224-5)

**Tree numbers:** - C10.500.680.800.730 - C16.131.666.680.800.730

**Synonyms:** - Spina Bifida Aperta - Spina Bifida Manifesta