How can doctors report if a tumor is not cancerous by purely looking at the MRI?

the doctors told her the tumor is not cancerous but how can they tell if they havent removed the tumor on the other hand to test it?How can doctors report if a tumor is not cancerous by purely looking at the MRI?
Cancer have a number of characteristics that sort it look different than other types of growths on MRI. Cancer is denser than normal tissues. It doesn't respect middle-of-the-road boundaries between tissues. Depending on what part of the body you're conversation about, in that may be non-cancerous growths that have a charcteristic appearance, approaching a lipoma, or location, like a meningioma, that let the radiologists say that's what some lump is instead of cancer.
Imaging can't other tell the difference between cancer and something else, but if they describe you they see it's not cancer, that's reliable.
Could be because of the kind that they ruminate that it is. Some type tumors are primarily non cancerous. I had one on my spine 2 yrs ago and they didn't detail me anything until the report after surgery. Good luck.

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