In the sentence extracted from biomedical literature, identify all the disease entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="disease"> to denote a disease.

### Input Text: Only 7 percent of women from families with a history of breast cancer but not ovarian cancer had BRCA1 mutations .
### Output Text:
Only 7 percent of women from families with a history of <span class="disease">breast cancer</span> but not <span class="disease">ovarian cancer</span> had BRCA1 mutations . 