The dear doctor! Prompt please, whether there is any way tochn...

[Oksana]

The dear doctor!
Prompt please, whether there is any way precisely to learn or find out, whether there is an oncologic disease in an organism. Whether is is, in what way and where it can be made?

[Berzoj A.A.]

The answer will be in style of " black humour " (but your question deserves such answer!)
Yes, the way is - pathoanathomical research of an organism....