Syrinx reduction due to spontaneous spinal cord tear: demonstration on 3 T MRI and review of the literature.

Staglianó, Serena; Prodi, Elena; Goeggel Simonetti, Barbara; Cianfoni, Alessandro (2021). Syrinx reduction due to spontaneous spinal cord tear: demonstration on 3 T MRI and review of the literature. BMJ case reports, 14(12) BMJ Publishing Group 10.1136/bcr-2021-246235

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A holocord syringomyelia due to Chiari 1.5 malformation (CM) in a 12-year-old girl was serially imaged with 3 T MRI over 4 years. The serial MRI showed reduction in size of the syrinx, without any surgical intervention or CM improvement, but rather due to spontaneous spinal cord tear. The tear was clearly demonstrated by evidence of flow signal across the tear between syrinx and subarachnoid space at the upper thoracic level. The tear showed spontaneous closure at follow-up. A medullary tear has been described in the adult population as one of the putative causes of spontaneous syringomyelia reduction, but its clear demonstration with modern high-resolution MRI has not been reported in the paediatric population. Moreover, this is the first reported case of syrinx reduction due to spontaneous fissuration in a paediatric patient.

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