(CBS News) – “Breast cancer” may be an inaccurate blanket term for ten separate diseases, according to a new study in Nature.

Researchers looked at breast cancers in 2,000 women from the U.K. and Canada and realized that the cancers, while under one unifying kind of disease, have distinct subtypes. Because hospitals often cast a wide net of tests and don’t break down the kind of breast cancer further from their broad categorizations, treatments might not be as specialized as they could be, the researchers said.

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