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Were benign tumors malignant at one time? Is there a sequence of changes from benign to malignant?

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1 doctor agrees

In brief: Sometimes

Colon cancer is a disease we think progresses from normal cell, then benign growths (adenoma), more abnormal appearing cells (adenoma with dysplasia) cells that look cancerous but are contained (carcinoma in situ), then a cancer. That is not the case for all cancers though.

In brief: Sometimes

Colon cancer is a disease we think progresses from normal cell, then benign growths (adenoma), more abnormal appearing cells (adenoma with dysplasia) cells that look cancerous but are contained (carcinoma in situ), then a cancer. That is not the case for all cancers though.
Dr. Lee Pederson
Dr. Lee Pederson
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