Inglês

Injury and insult

Is it possible for cancer to develop as a result of an injury?

It's a common myth that injuries can cause cancer, the

American Cancer Society informed on its Website. Until the

1920s, some doctors believed trauma did cause cancer, despite the

failure of injury to cause cancer in experimental animals.

But most medical authorities, including the Cancer Society

and the National Cancer Institute, see no such link.

The more likely explanation, the society suggests, is that

a visit to the doctor for an injury could lead to finding an existing

cancer.

Other possibilities are that scar tissue from an old trauma

could look like a cancerous lesion and that an injured breast or limb

would be more closely watched for cancer to develop.

A single interview-based study of breast cancer in England

found that 67 women with breast carcinoma were more likely to

report physical trauma to the breast in the preceding five years than

134 women in a matched control group without cancer. The study

was criticized because of its size and methodology.

Published in 2002 in The European Journal of Cancer

Prevention, the study has not been duplicated. Its authors suggested

that it was plausible that models of epithelial cell generation could

be a mechanism. But the case is far from proved, even for a single

type of cancer.

Internet: (adapted).

Based on the text above, judge the following items.

In the past some doctors believed that injuries caused cancer because this is what animal experiments indicated.