what is known as stone cancer?

Not my specialty but I see that no one has posted anything for you.
Stone cancer...??
Could be slang for testicular cancer.. cancer of the 'stones'
An internet site stated that it could also be prostate cancer.
A second site cited a medical book. They described a stone cancer as an attribute of any cancer that was stone like.. hard, firm, friable, lack of blood vessels to supply it.
they compared it to cyrosis of the liver.

Sorry that I don't have a good solid answer on this one.
? American Cancer Society as a contact?

I found this.

This link led me to

this link.