Assertion: tumor | /r/HasProperty | graded
Facets:
value: often
type: TEMPORAL
value: with approximately 70 percent
type: OTHER
Source sentences:
text: When dealing with breast cancer, tumors are often graded based on a scale of one to three indicating how aggressive the cancerous cells are:
text: The American Association of Neurological Surgeons explains that the World Health Organization developed a brain tumor grading system with four grades: grade I and grade II tumors are considered low grade tumors, while grade III and grade IV are considered high-grade tumors 2.
text: These tumors are quite rare and are usually considered low-grade cancers, with approximately 70 percent presenting as Stage I disease (cancer is limited to one or both ovaries).
text: The tumors are graded according to how aggressive they are, with lower-grade tumors often being benign and higher-grade tumors being malignant.