Intraspinal occupancy is descriptive imaging language that will reveal the presence of an abnormal occupancy in the spinal canal when a CT or MRI is taken. In addition to the spinal cord and cerebrospinal fluid, there is also the cauda equina nerve in the spinal canal, which does not present as a huge occupancy. The following conditions are to be considered when an occupying lesion is found by imaging. The most common is a herniated disc. A huge disc herniation, with the nucleus pulposus protruding into the spinal canal, can lead to compression of the occupying nerve in the spinal canal. There are also intravertebral tumors, such as chordoma or nerve sheath meningioma, which can cause intravertebral occupancy and result in nerve compression with clinical manifestations such as low back pain, lower extremity weakness, and muscle atrophy. Regardless of the condition, intradural occupancy is a difficult neurological condition to treat and requires surgery to cure.