Found this piece if news a couple of weeks ago....
Ronnie has been diagnosed with the early stages of stomach cancer. We are starting treatment immediately at the Mayo Clinic. After he kills this dragon, Ronnie will be back on stage, where he belongs, doing what he loves best, performing for his fans.
Thanks to all the friends and fans around the world that have sent well wishes. This has really helped to keep his spirit up.
Long Live Rock and Roll, Long Live Ronnie James Dio"
This was a quote from his website.
Here's a gem from the early days BEFORE the likes of Rainbow, Sabbath, etc.
1964 - Ronnie Dio & the Prophets
TVD Live: U2 at Capital One Arena, 6/17
10 hours ago