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A 2-year-old child with dorsal dermal sinus presenting with sudden onset of inability to stand

© BMJ Publishing Group Limited 2021. No commercial reuse. See rights and permissions. Published by BMJ. DESCRIPTION A 2yearold child presented to the paediatric emergency department with sudden onset of inability to stand unsupported for 1 week. The parents noticed a discharging sinus in posterior aspect of lower neck at 2 months of age, which had discharged pus 2 months ago, with associated fever and pain. At presentation, there was no discharge or fever. On examination, the child was afebrile with stable vitals. Local examination revealed a midline sinus opening over the upper dorsal spine. No discharge or erythema was seen. Contrastenhanced MRI of the spine was performed. Precontrast images demonstrate