intraventricular tumor

例句：

1. 1.He was diagnosed with a rare intraventricular tumor.
   他被诊断出患有一种罕见的脑室内肿瘤。
2. 2.The patient's condition worsened after receiving treatment for the intraventricular tumor.
   患者在接受治疗脑室内肿瘤后病情恶化。
3. 3.The tumor has been successfully removed through surgery, but further monitoring is necessary.
   通过手术成功切除了肿瘤，但需要进一步监测。