CHICAGO — The widely used cancer drug Avastin can help keep ovarian cancer in check, but only if used for a long period of time, researchers reported here on Sunday.
Another study, also presented at the annual meeting of the American Society of Clinical Oncology, showed that men with high-risk prostate cancer lived longer if they were treated with radiation in addition to hormone-blocking drugs.
And a drug derived from a marine sponge was found to lengthen the lives of women with advanced breast cancer by about two and…