✓The use of an absorbable hydrogel dural sealant has been approved for neurosurgical applications with no published reports of complications to date. The authors present the case of a 13-year-old girl with syringomyelia and quadriparesis who underwent posterior fossa decompression and dural augmentation for Chiari malformation Type I. Dural closure was performed with a dural substitute patch, hydrogel dural sealant, and gelatin sponge. Magnetic resonance imaging, performed after initial postoperative improvement in the patient's quadriparesis deteriorated, demonstrated an expanding epidural mass collection causing cervicomedullary compression. Exploration on postoperative Day 15 revealed an expanded layer of hydrogel underlying a layer of gelatin sponge. The authors conclude that hydrogel dural sealants should be used cautiously in spaces that cannot tolerate significant mass effect.
Abbreviations used in this paper:CM-I = Chiari malformation Type I; CSF = cerebrospinal fluid; CT = computed tomography; FLAIR = fluid attenuated inversion recovery; MR = magnetic resonance.
Address reprint requests to: Spiros Lee Blackburn, M.D., Barnes-Jewish Hospital, Department of Neurosurgery, 660 South Euclid Street, Campus Box 8057, St. Louis, Missouri 63110. email: