A rare case of thoracic myelopathy
due to epidural ossification
in a child
To determine a differential diagnosis of thoracic myelopathy
Summary of Background Data.
is one of the common lesions that can cause thoracic myelopathy
. The majority of the cases occur in adults and ossification
usually occurs in ligamentous tissues. To the authors’ knowledge, no published reports in the English literature have described a case of thoracic myelopathy
in a child
caused by ectopic epidural and nonligamentous ossification
A 15 year-old girl presented with a chief complaint of bilateral numbness of the thigh and gait disturbance.
Computed tomography demonstrated 3 islands of epidural ossifications that surrounded the dural sac from T2–T4 and compressed the spinal cord. These lesions, which were not due to ossification
of the ligament, were surgically resected. After resection, her symptoms completely disappeared. Histologic diagnosis of the removed specimen was fibro-osseous tissue. Radiologic examination demonstrated no recurrence of the lesion 6 years after surgery.
We describe this condition as idiopathic epidural ossification
, as the reason is unknown and discussed its etiology.