Assertion: tumor marker | /r/HasProperty | helpful
Facets:
value: in some cases
type: OTHER
value: very
type: DEGREE
Source sentences:
text: The bottom line is, tumor markers can be very helpful in watching a person's response to treatment and, in some cases, watching for the cancer to return.
text: To help stage a tumor : In some cases, tumor markers may be helpful in determining the stage of a cancer, which is important in choosing the best treatment options.
text: : In some cases, tumor markers may be helpful in determining the stage of a cancer, which is important in choosing the best treatment options.