Assertion: malignant brain tumor | /r/HasProperty | secondary brain tumors
Facets:
Source sentences:
text: Each year, approximately 70,000-170,000 cancer patients are diagnosed with brain metastases (metastatic brain tumors/secondary brain tumors), while ~100,000 will die every year as the result of brain metastases.
text: A metastatic brain tumor is also called a secondary brain tumor .