BACKGROUND: Extradural @entity1653 are rare. Our understanding of purely extradural @entity1653 is incomplete because most reports rarely differentiate purely @entity1653 from @entity1653 with an intradural component. Occasionally, reports have described involvement of the adjacent nerve root, but there has never been a description of an extradural @entity1653 that actually infiltrates the nerve root. CASE DESCRIPTION: A 42-year-old @entity1 presented with progressive lower extremity @entity425 and @entity1183 below T3 during the span of 4 months with imaging evidence of an extradural lesion compressing the cord from T4 through T6. Surgical resection revealed an extradural mass extending through the foramen at T5-6 and encompassing the cord and T5 root on the left. Pathologically, the lesion was a World Health Organization grade I @entity1653 with nerve root invasion and a concerning elevated @entity1758 ( @entity1758 ) of 9.4%. CONCLUSIONS: Purely @entity1653 are rare, and our case is one of the first to describe a @entity1 with an extradural @entity1653 that actually infiltrates the nerve root. Extradural @entity1653 are usually not adherent to the dura, but only appear to be adherent or invade (as in our @entity1 ) the adjacent nerve root. They are easily mistaken preoperatively and grossly intraoperatively for malignant @entity3 and can change the proposed surgical treatment. The long-term prognosis remains uncertain, but our @entity1 's last follow-up suggests a favorable prognosis.

Extradural en-plaque spinal meningioma with XXXX .

@entity1 :: ('9606', 'Species') :: ['woman', 'patient'] @entity1183 :: ('MESH:D006987', 'Disease') :: ['numbness'] @entity425 :: ('MESH:D018908', 'Disease') :: ['weakness'] @entity1653 :: ('MESH:D008579', 'Disease') :: ['extradural meningiomas', 'meningioma', 'spinal meningiomas'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastatic tumors'] @entity1758 :: ('57534', 'Gene') :: ['MIB-1', 'mindbomb homolog 1']
@entity3 :: (MESH:D009362,Disease) :: ['intraneural invasion']
