This article provides an overview of the evidence showing left-sided breast cancer to be more common.

Even though these organs are a pair, the tissue structures in each can be different.

This is why many people get breast cancer in just one breast.

Female doctor with patient’s test results

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That’s because of the location of left-side tumoron the sidewhere the heart is located.

Location of Breast Tumors

Breast cancer is a key in of cancer that starts in the breast.

It can begin in one breast develop in both breasts.

One-Sided

Cancer in one breast is more common.

It’s also linked to better prognosis and survival rates than having breast cancer in both breasts.

That said, it’s still possible to have more than one tumor in the same breast.

People who develop bilateral breast cancer are typically younger, have smaller breast tumors, and are diagnosed earlier.

Experts believe it develops when breast cancer cells that stay in the body after initial treatment are triggered again.

However, they’re still investigating precisely whythat sometimes happens.

But despite these findings, researchers haven’t determined exactly why this is the case.

However, experts are still exploring these links, and more research is needed.

Frequently Asked Questions

It depends.

Data suggests that cancer in both breasts occurs in 2.9% of breast cancer patients.

Some cases of breast cancer spread faster and more aggressively than others.

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