syringoencephalomyelia

A tubular cavity involving both brain and spinal cord and etiologically unrelated to vascular insufficiency. [syringo- + G. enkephalos, brain, + myelos, marrow]

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sy·rin·go·en·ceph·a·lo·my·elia (sĭ-ring″go-ən-sef″ə-lo-mi-eґle-ə) [syringo- + encephal- + myel- + -ia] the existence of cavities in the substance of the brain and spinal cord.