Scientists say, they have found a way to freeze breast cancer tumors.
They say, breast cancer can be killed off by being frozen with streams of super-cold gas.
And, in a major breakthrough, the "ice-ball" created around a tumor by the injections not only kills it... but ensures the cancer does not return.
Fine needles are used to inject the freezing gas around the tumour in a technique known as cryotherapy, which means the patient does not need invasive surgery and suffers no major discomfort.
The trial was carried out on 13 patients. They remained cancer-free up to five years later when doctors saw no sign of the disease returning and noted no significant complications.
One doctor (at the Barbara Ann Karmanos Cancer Institute in Detroit) said the findings suggested freezing tumours was both safe and effective.