Cord Cystic Cavities: Syringomyelia and Prominent central canal

Publication date: Available online 12 July 2016 Source:Seminars in Ultrasound, CT and MRI Author(s): Blaise V. Jones Syringomyelia is the term given to cystic cavities in the spinal cord, most of which are associated with congenital malformations of the craniocervical junction and represent dilation of the central canal of the cord. As such, syrinxes can be considered analogous to hydrocephalus. The exact etiology of syrinx formation remains a subject of debate, but there is good evidence that they are the result of obstruction of the normal flow of CSF between the intracranial and spinal compartments. The chances that a syrinx will progress over time is much greater when they are associated with a causative lesion (Chiari malformation, tumor, infection, trauma), but asymptomatic central canal dilation may be a stable incidental finding. While spinal cord neoplasms are a recognized etiology for syrinx formation, especially in adults, it is not always necessary to administer contrast when evaluating a syrinx for the first time with MR imaging.
Source: Seminars in Ultrasound, CT and MRI - Category: Radiology Source Type: research