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Occult Blood - blood in the stool that is not visible to the naked eye. This type of bleeding is detected by performing a laboratory test on a stool sample.
Oncologist, medical - a doctor who specializes in the medical treatment of cancer. Medical oncologists have expert knowledge of how cancers behave and grow.
Oncologist, radiation - a doctor trained in cancer treatment using radiation therapy.
Oncologist, surgical - a doctor who performs biopsies and other surgical procedures to diagnose and treat cancer.
Ostomy - a general term meaning an opening, especially one made by surgery; see also Colostomy.