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What is a histologic grade?

A histologic grade refers to how much tumor cells resemble normal cells when viewed under the microscope. The grading scale usually ranges from 1 to 3. Grade 1 tumors are composed of cells that closely resemble normal ones. Grade 3 tumors contain very abnormal-looking and rapidly growing cancer cells.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.