medulloblastoma

例句：

1. 1. The patient was diagnosed with a medulloblastoma and underwent surgery immediately.
   患者被诊断出患有髓母细胞瘤，并立即接受了手术。
2. 2.The medulloblastoma had spread to the brain, making treatment challenging.
   髓母细胞瘤已经扩散到大脑，使得治疗变得具有挑战性。
3. 3. The prognosis for patients with medulloblastoma is generally poor, but early detection can improve outcomes.
   髓母细胞瘤患者的预后通常较差，但早期发现可以提高结果。