Chordoma: experience with thirteen cases.
D001859:Bone Neoplasms; D002817:Chordoma; D009369:Neoplasms; D012886:Skull; D012888:Skull Neoplasms; D013120:Spinal Cord Neoplasms; D013131:Spine
CHORDOMA; CRANIUM/neoplasms; SPINE/neoplasms