how can doctors be confident in saying "we got all of the cancer"?

When I watch TV I often hear the doctors (actors) assure patients and their family that they got “all of the cancer” during removal surgeries.

In my mind… I always thought that cancer was a lump of cells… multiplying uncontrolled… and at some point along its margins, it borders normal tissue.

How can you possibly cut perfectly between normal tissue and cancerous tissue?

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@Evono
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5•1 year ago
Cancer is never cured. Testing goes on your in remission. If your lucky it won’t come back or go bad again.

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