Do benign tumors turn into malignant tumors?

A few do. Almost all colon cancer arise in colonic polyps which start out as benign tumors. However, vast majority of benign tumor do not become malignant, e.g., moles and uterine leiomyomas.

Related Questions

Do benign tumors always turn into malignant tumors?

Terminology issues. The term malignant is used to describe a tumor known to spread to & damage tissues & organs to the point death is possible. Benign tumors are less worrisome.They tend not to spread, but someone may have many individual ones.Their location & growth may produce problems for the patient.Transformation to a malignancy in unheard of for some benign lesions and rare for others. Read more...

Were benign tumors possibly malignant at one time?

Possible, not likely. Benign tumors can turn malignant but malignant tumors would rarely, if ever, (i never say never!) become benign except as a result of total tumor destruction by chemotherapy or radiation therapy. Although all tumor is killed, there can be a residual smaller mass because of scar and other tissue. Such a "benign" tumor could sit stable for years and then regrow from residual "dormant" tumor cells. Read more...

Do benign tumors have spread or just malignant ones?

Depends on situation. There is a middle ground between the common idea of benign (never harmful) and malignant (always harmful). Conditions like tuberous sclerosis can generate tumors that become destructive because of there location, like in the brain or heart. They don't have to travel there like some cancers, they can just pop up anywhere & interfere with normal tissue. Read more...

What are the chances of a benign tumor turning malignant?

Highly dependent. This is highly dependent on the location, type of tumor, and treatment of the benign tumor. Read more...

Are benign tumors malignant when they are growing bigger in size?

No. Small tumors can be malignant, and tend to grow and spread if left untreated. Benign tumors can also grow, and somtimes get big because of lack of symptoms. Only way to tell benign from malignant is to look at cells under microscope. Read more...

Please tell me, are benign tumors malignant when they are growing?

Yes and no. Benign tumors typically do not change much(grow very slowly). Any tumor that is growing can be a cancer. So you should get a medical examination to find out what you have. A biopsy is required to find out if it is benign or a cancerous tumor. Read more...
Benign tumors. Benign tumors can and do grow, and some benign tumors have potential to become malignant. Just because a benign tumor is growing doesn't mean it is malignant. However, best to see your doctor to figure out whether a tumor is benign or malignant. Read more...

How can you tell the difference between a malignant and a benign tumor?

Biopsy. A biopsy is the only way to tell if a tumor is malignant. A pathologist will examine the cells under the microscope and decide. Read more...
Malignant. The two terms malignant and benign are medical terms and they are often confused with each other. The fact is that they are poles apart in meaning. Malignant means that the affected cells in the body are cancerous. The tumors which are malignant can attack the tissues lying the surrounding region and spread in the body. The only are way to tell malignant from benign is a biopsy. Read more...

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

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. Read more...

Could benign tumors become malignant?

Depends on situation. There is a middle ground between the common idea of benign (never harmful) and malignant (always harmful). Conditions like tuberous sclerosis can generate tumors that become destructive because of there location, like in the brain or heart. They don't have to travel there like some cancers, they can just pop up anywhere ; interfere with normal tissue. Read more...