Chordoma:  its roentgen diagnostic aspects and its response to roentgen therapy.
D001859:Bone Neoplasms; D002817:Chordoma; D006801:Humans; D009369:Neoplasms; D011878:Radiotherapy; D012447:Sacrum; D013120:Spinal Cord Neoplasms; D013131:Spine
CHORDOMA; RADIOTHERAPY; SACRUM/neoplasms; SPINE/neoplasms