Staging is slightly different than grading -- this method helps doctors understand how far the condition has progressed. To determine the stage, the doctor takes into account the tumor's grade, size, and whether it has spread to other areas such as the lungs. Stage I MFH tumors have a low grade and have not spread beyond their original location. Grade II or III tumors have a higher grade but have not reached the lymph nodes. Grade IV tumors have reached the lymph nodes and other areas of the body.

BeholdingEye / Getty Images
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.