Final answer:
Syringomyelia most commonly occurs at spinal cord levels C8 - T1.
Step-by-step explanation:
Syringomyelia is a condition in which fluid-filled cavities, known as syrinxes, form within the spinal cord. These syrinxes can cause damage to the spinal cord and result in various neurological symptoms. Syringomyelia most commonly occurs at the spinal cord levels C8-T1, which are in the lower part of the cervical spine and upper part of the thoracic spine. Therefore, the statement 'Syringomyelia most commonly occurs at spinal cord levels C8 - T1' is true.