Umm... Yeh, and cutting people open to perform surgey causes holes in bodies.
Snide remarks do not improve your argument.
If you build a machine which detects and treats cancer noninvasively, then if the machine causes cancer and treats it before it's a problem, I don't see the issue.
The reason you don't see an issue is because you don't understand the actual risks involved.  When my wife had cancer, treatment of which did not require radiotherapy, she was warned about said risks from the multiple CT scans she would be getting for the next 5 years.  Been a while so I don't remember exactly what the doctor said but here's Wiki's quote on it:
 An abdominal or chest CT would be the equivalent to 2–3 years of background radiation to the whole body, or 4–5 years to the abdomen or chest, increasing the lifetime cancer risk between 1 per 1,000 to 1 per 10,000.[134] This is compared to the roughly 40% chance of a US citizen developing cancer during their lifetime. 
Did you catch that last line?  A _single_ body CT will give you about the same chance of getting cancer as the average American has over their lifetime...
It's basically a machine that can put the eggs back in their shells.
No, what you are proposing is a machine that will cause you to "grow eggs" inside you.  And they'll be nasty little buggers that will consume you from within. You also brought up ultrasound.  That's another one we've experience with.  Having a ultrasound guided biopsy done is not a pleasant experience.