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: Germline VHL gene mutations predispose to the development of retinal , cerebellar and spinal haemangioblastomas , renal cell carcinoma and phaeochromocytoma .
### Output Text:
Germline <span class="disease">VHL</span> gene mutations predispose to the development of <span class="disease">retinal , cerebellar and spinal haemangioblastomas</span> , <span class="disease">renal cell carcinoma</span> and <span class="disease">phaeochromocytoma</span> . 