NCIt definition : A rare congenital but non-hereditary disorder characterized by angiomas or arteriovenous
malformations of the spinal cord. Clinical signs include sudden onset of radicular
pain localizable to a dermatome with overlying cutaneous vascular lesions. Untreated,
the clinical course follows a progression of sensory loss, weakness to paralysis and
incontinence. However, clinical prognosis improves with endovascular embolization
and/or surgical excision of the spinal lesion.;