Chordomas and cartilaginous tumors at the skull base.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002817:Chordoma / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000401:mortality / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D009777:Occipital Bone; D011379:Prognosis; D011859:Radiography; D012445:Sacrococcygeal Region; D012888:Skull Neoplasms; D013100:Sphenoid Bone; D013131:Spine; D014786:Vision Disorders / Q000209:etiology