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: Here we report two families with HPT - JT syndrome in which adult renal hamartomas or cystic kidney disease were prominent associated features , possibly representing a new phenotypic variant of the HPT - JT syndrome .
### Output Text:
Here we report two families with <span class="disease">HPT - JT syndrome</span> in which <span class="disease">adult renal hamartomas</span> or <span class="disease">cystic kidney disease</span> were prominent associated features , possibly representing a new phenotypic variant of the <span class="disease">HPT - JT syndrome</span> . 