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: A 2 year old female presenting with bilateral sporadic aniridia was found to have an apparently balanced reciprocal translocation with a chromosome 11 breakpoint within band p13 .
### Output Text:
A 2 year old female presenting with <span class="disease">bilateral sporadic aniridia</span> was found to have an apparently balanced reciprocal translocation with a chromosome 11 breakpoint within band p13 . 