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: Mutation of MSH3 in endometrial cancer and evidence for its functional role in heteroduplex repair .
### Output Text:
Mutation of MSH3 in <span class="disease">endometrial cancer</span> and evidence for its functional role in heteroduplex repair . 