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: RESULTS BRCA1 mutations were identified in 16 percent of women with a family history of breast cancer .
### Output Text:
RESULTS BRCA1 mutations were identified in 16 percent of women with a family history of <span class="disease">breast cancer</span> . 