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: No mobility shift was seen in any of the 23 chromophobe renal cell carcinomas .
### Output Text:
No mobility shift was seen in any of the 23 chromophobe <span class="disease">renal cell carcinomas</span> . 