undifferentiated thyroid carcinoma

例句：

1. 1. The patient was diagnosed with undifferentiated thyroid carcinoma and underwent surgery immediately.
   患者被诊断为甲状腺未分化癌，并立即接受了手术。
2. 2. Undifferentiated thyroid carcinoma is a rare but aggressive form of cancer that requires early detection and treatment.
   甲状腺未分化癌是一种罕见的但具有侵袭性的癌症形式，需要早期检测和治疗。
3. 3. Researchers are studying the molecular mechanisms underlying undifferentiated thyroidcarcinoma to develop more effective treatments.
   研究人员正在研究甲状腺未分化癌的分子机制，以开发更有效的治疗方法。