Intramedullary subependymoma of the lower spinal cord.

A 22-year-old woman developed an increasing distal paraparesis, which resulted in a severe ataxic gait. MRI demonstrated a very large intramedullary tumour mass from D11 to L2, which could not be identified as one of the common neoplastic diseases of the spinal cord. The tumour was removed completely and the diagnosis of subependymoma confirmed. With respect to our patient and to the limited reports in the literature, we describe some typical features that may help in the diagnostic and preoperative assessment of this very rare spinal cord tumour.