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: In all three cases , there is a strong family history of breast , ovarian , or other cancers possibly related to a BRCA1 defect and family members showed a high concordance of cancer incidence with the presence of R841W .
### Output Text:
In all three cases , there is a strong family history of <span class="disease">breast , ovarian , or other cancers</span> possibly related to a BRCA1 defect and family members showed a high concordance of <span class="disease">cancer</span> incidence with the presence of R841W . 