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Scarff Bloom Richardson |
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TEST ACRONYMN/AFULL TERMINOLOGYScarff Bloom Richardson DEFINITIONHistology is the study of tissues, including cellular structure and function. Pathologists (physicians who conduct laboratory studies of tissues and cells) often assign a histologic grade to a patient's cancerous breast tumor to identify the type of tumor present and help determine the patient's prognosis (projected outcome). The Scarff-Bloom-Richardson system is the most common type of cancer grade system used today. WHEN TEST WOULD BE PERFORMEDTo determine a tumor's histologic grade, pathologists examine the breast cancer cells and their patterns under a microscope. A sample of breast cells may be taken from a breast biopsy, lumpectomy or mastectomy. INFORMATION VALUEPathologists closely observe three features when determining a cancer's grade: the frequency of cell mitosis (rate of cell division), tubule formation (percentage of cancer composed of tubular structures), and nuclear pleomorphism (change in cell size and uniformity). Each of these features is assigned a score ranging from 1 to 3 (1 indicating slower cell growth and 3 indicating faster cell growth). The scores of each of the cells' features are then added together for a final sum that will range between 3 to 9. CAUTIONN/A
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Last Updated on Thursday, 21 January 2010 10:07 |