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: Low incidence of BRCA2 mutations in breast carcinoma and other cancers .
### Output Text:
Low incidence of BRCA2 mutations in <span class="disease">breast carcinoma</span> and other <span class="disease">cancers</span> . 