Cordoma是一种源于希腊语的医学术语，意为“绳索状肿瘤”或“绳索组织瘤”，是一种罕见的恶性肿瘤，主要发生在脊柱的骶尾部和颅底部。
例句：
1. A chordoma is a type of cancer that can form anywhere in the body where there are remnants of the notochord.（Cordoma是一种癌症，可以在身体中任何残留脊索的部位形成。）
2. The diagnosis of a chordoma can be difficult due to the rarity of the condition.（Cordoma的诊断由于该情况的稀有性可能会很困难。）
3. Treatment for a chordoma often involves a combination of surgery, radiation therapy, and chemotherapy.（Cordoma的治疗通常涉及手术，放射治疗和化疗的组合。）
4. Chordomas are most commonly diagnosed in adults over the age of 30.（Cordoma最常见于xx岁以上的成年人。）
5. The symptoms of a chordoma can vary depending on the location of the tumor.（Cordoma的症状因肿瘤的部位而异。）
6. The prognosis for a chordoma can be poor, as the cancer tends to be aggressive and difficult to treat.（Cordoma的预后可能很差，因为癌症往往具有侵袭性和难以治疗。）
7. In some cases, a chordoma may be diagnosed incidentally during an imaging test for another condition.（在某些情况下，Cordoma可能在为其他情况进行的成像检查中无意中被诊断出来。）
8. Chordomas can recur after treatment, so ongoing monitoring and follow-up care is necessary.（Cordoma在治疗后可能会复发，因此需要进行持续监测和后续护理。）
9. Research is ongoing to develop new and more effective treatments for chordoma.（正在进行研究，以开发针对Cordoma的新型和更有效的治疗方法。）
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