Ask Your Doctor: Do I Need This Cancer Test or Treatment? (ASCO) → You may not need some common forms of imaging, screening tests, monitoring and drug therapy for cancer. Cancer Tests and Treatments (ASCO) → Some tests, treatments, and procedures are not only unnecessary, they can even prove harmful. Care at the End of Life for Advanced Cancer Patients (ASCO) → Although it is hard to accept, the best thing for you may be to stop treatment for the cancer. Drugs to Prevent Infection During Chemotherapy (ASCO) → When do you need CSFs? When don't you need them? Imaging and Blood Tests in Early Breast Cancer (ASCO) → When do cancer experts recommend imaging tests and tumor marker tests? Imaging Tests for Early Prostate Cancer (ASCO) → It's not always a good idea to get all the tests that are available. You may not need them. PET Scans After Cancer Treatment (ASCO) → If you've been treated for cancer, you may not need PET scans to check for a return of the cancer.