Diastatomyelia is a condition where we have the spinal cord is split in the middle into two halves. Each half is surrounded by a separate dural sac. In between the two halves there is a fissure, which usually contains a bony spur or fibrous band, which arises from the back of the vertebral body and attaches itself to the vertebral arch. This condition is usually associated with other vertebral anomalies like scoliosis, wedge vertebra and other bony anomalies. Occasionally there is overlying cutaneous changes in the form of hairy patch or skin pigmentation. Sometimes there is a dermal sinus overlying that area. .
Notice the two round objects that look like fried eggs. That is the two separately enclosed segments of spinal cord. Some cases would present with limb and feet defects in the form of a wasted leg. Other bladder and bowel changes can also be present. Various motor or sensory changes are seen.
This condition is usually found in childhood. In cases it may be a tethered cord syndrome.
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