| Disease | brain cancer | 
| Comorbidity | C0025149|medulloblastoma | 
| Sentences | 2 | 
| PubMedID- 22766741 | medulloblastoma (mb) is one of the most common malignant brain tumors of childhood and is associated with a poor prognosis. | 
| PubMedID- 21076938 | medulloblastoma is one of the common malignant brain tumors in children or young adults and its overall disease-free 5-year survival rate is approximately 50% due to tumor progression, invasion, and metastasis. | 
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