Midline solitary osteochondroma of C2 vertebra with myelopathy in a child: A case report with review of literature

Spinal osteochondromas with neurological deficits are rare. Only 0.5% to 1% of spinal osteochondromas present with neurological dysfunction. We hereby present a case of osteochondroma of the C2 lamina with neurological deficit and unique presentation.A 10-year-old female presented with a history of severe weakness of all four limbs after a fall. Weakness had spontaneously improved over initial three days and she presented to us with mild weakness of the right upper limb about two weeks after the fall. On examination, neck movements were full and painless with spastic quadriparesis and a motor power of grade 4/5 in all four limbs with extensor plantars.On radiology, CT scan of the cervical spine showed an osseous outgrowth from the C2 lamina in the midline projecting into the spinal canal, directed superiorly toward the dens. An MRI showed spinal-cord compression with cord deformation and signal changes.She underwent en bloc excision of the tumor mass, which was severely impinging on the spinal cord. Histopathology confirmed a diagnosis of osteochondroma. At four-year follow-up, there was complete recovery with no signs of recurrence.Spinal osteochondroma is a rare but potential cause of spinal-cord compression in a child with varied presentation.